diff options
Diffstat (limited to 'vhosts/blog/public/posts/2022-11-19/phperkaigi-2023-unused-token-quiz-2')
| -rw-r--r-- | vhosts/blog/public/posts/2022-11-19/phperkaigi-2023-unused-token-quiz-2/index.html | 103 |
1 files changed, 58 insertions, 45 deletions
diff --git a/vhosts/blog/public/posts/2022-11-19/phperkaigi-2023-unused-token-quiz-2/index.html b/vhosts/blog/public/posts/2022-11-19/phperkaigi-2023-unused-token-quiz-2/index.html index 147d7a81..e093f669 100644 --- a/vhosts/blog/public/posts/2022-11-19/phperkaigi-2023-unused-token-quiz-2/index.html +++ b/vhosts/blog/public/posts/2022-11-19/phperkaigi-2023-unused-token-quiz-2/index.html @@ -14,8 +14,7 @@ <meta property="og:locale" content="ja_JP"> <link rel="icon" type="image/svg+xml" href="/favicon.svg"> <title>PHPerKaigi 2023: ボツになったトークン問題 その 2｜REPL: Rest-Eat-Program Loop</title> - <link rel="stylesheet" href="/style.css?h=79020a898c7052f79b32e90376a4497d"> - <link rel="stylesheet" href="/hl.css?h=340e65ffd5c17713efc9107c06304f7b"> + <link rel="stylesheet" href="/style.css?h=60eb349e583f5bd51518a7eb98598043"> </head> <body class="single"> <header class="header"> @@ -90,16 +89,18 @@ 注意: これはボツ問なので、得られたトークンを PHPerKaigi で入力してもポイントにはならない。 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span></code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span></code></pre> + </div> <p> "And Then There Were None" (そして誰もいなくなった) と名付けた作品。変則 quine (自分自身と同じソースコードを出力するプログラム) になっている。 @@ -112,46 +113,52 @@ 実行してみると、次のような出力が得られる。 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-comment">#</span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span></code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#6A737D">#</span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span></code></pre> + </div> <p> 1 行目を除き、先ほどのコードとほぼ同じものが出てきた。もう一度実行してみる。 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-comment">#</span> -W -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span> -<span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">""</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span></code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#6A737D">#</span></span> +<span class="line"><span style="color:#005CC5">W</span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span> +<span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">""</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<?php printf((isset($s)?fn($s)=>trim($s,""):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span></code></pre> + </div> <p> 今度は 2 行目が書き換えられた。すべての行が変化するまで繰り返すと次のようになる。 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-comment">#</span> -W -E -L -O -V -E -P -H -P</code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#6A737D">#</span></span> +<span class="line"><span style="color:#005CC5">W</span></span> +<span class="line"><span style="color:#005CC5">E</span></span> +<span class="line"><span style="color:#005CC5">L</span></span> +<span class="line"><span style="color:#005CC5">O</span></span> +<span class="line"><span style="color:#005CC5">V</span></span> +<span class="line"><span style="color:#005CC5">E</span></span> +<span class="line"><span style="color:#005CC5">P</span></span> +<span class="line"><span style="color:#005CC5">H</span></span> +<span class="line"><span style="color:#005CC5">P</span></span></code></pre> + </div> <p> トークン「#WELOVEPHP」が手に入った。 @@ -168,7 +175,9 @@ P</code></pre> Vim で開くと次のようになる (1 行目を抜粋)。 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-meta"><?php</span> <span class="hljs-title function_ invoke__">printf</span>((<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$s</span>)?<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">trim</span>(<span class="hljs-variable">$s</span>,<span class="hljs-string">"<200b>"</span>):<span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>))(<span class="hljs-variable">$s</span>=<span class="hljs-string">'<200b><?php printf((isset($s)?fn($s)=>trim($s,"<200b>"):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span>).<span class="hljs-string">"\n"</span>,<span class="hljs-string">"\x27<span class="hljs-subst">$s</span>\x27"</span>);<span class="hljs-meta">?></span></code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#D73A49"><?</span><span style="color:#005CC5">php</span><span style="color:#005CC5"> printf</span><span style="color:#24292E">((</span><span style="color:#005CC5">isset</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">?fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">trim</span><span style="color:#24292E">($s,</span><span style="color:#032F62">"<200b>"</span><span style="color:#24292E">)</span><span style="color:#D73A49">:fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">))($s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<200b><?php printf((isset($s)?fn($s)=>trim($s,"<200b>"):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span><span style="color:#24292E">)</span><span style="color:#D73A49">.</span><span style="color:#032F62">"</span><span style="color:#005CC5">\n</span><span style="color:#032F62">"</span><span style="color:#24292E">,</span><span style="color:#032F62">"</span><span style="color:#005CC5">\x27</span><span style="color:#24292E">$s</span><span style="color:#005CC5">\x27</span><span style="color:#032F62">"</span><span style="color:#24292E">);</span><span style="color:#D73A49">?></span></span></code></pre> + </div> <p> <code><200b></code> と表示されているのは、Unicode の U+200b で、ゼロ幅スペースである。 @@ -193,13 +202,17 @@ P</code></pre> 続いて、トークンへの変換ロジックを解析する。注目すべきはこの部分だ。以下、ゼロ幅スペースは Vim での表示に合わせて <code><200b></code> と記載する。 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-function"><span class="hljs-keyword">fn</span>(<span class="hljs-params"><span class="hljs-variable">$s</span></span>)=></span><span class="hljs-title function_ invoke__">chr</span>(<span class="hljs-title function_ invoke__">strlen</span>(<span class="hljs-variable">$s</span>)/<span class="hljs-number">3</span>)</code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#D73A49">fn</span><span style="color:#24292E">($s)=></span><span style="color:#005CC5">chr</span><span style="color:#24292E">(</span><span style="color:#005CC5">strlen</span><span style="color:#24292E">($s)</span><span style="color:#D73A49">/</span><span style="color:#005CC5">3</span><span style="color:#24292E">)</span></span></code></pre> + </div> <p> PHP の <code>strlen()</code> は文字列のバイト数を返す。1 行目の <code>$s</code> は以下の内容となっており、 </p> - <pre class="highlight" language="php"><code class="highlight"><span class="hljs-variable">$s</span>=<span class="hljs-string">'<200b><?php printf((isset($s)?fn($s)=>trim($s,"<200b>"):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span></code></pre> + <div class="codeblock" language="php"> + <pre class="shiki github-light" style="background-color:#f5f5f5;color:#24292e" tabindex="0"><code><span class="line"><span style="color:#24292E">$s</span><span style="color:#D73A49">=</span><span style="color:#032F62">'<200b><?php printf((isset($s)?fn($s)=>trim($s,"<200b>"):fn($s)=>chr(strlen($s)/3))($s=%s)."\n","\x27$s\x27");?>'</span></span></code></pre> + </div> <p> このソースコードは UTF-8 で書かれているので、105 バイトになる。それを 3 で割ると 35 となり、これは <code>#</code> の ASCII コードと一致する。他の行も、同様にしてゼロ幅スペースを詰めることで文字列長を調整し、トークンをエンコードしている。 |