2 files changed, 88 insertions, 0 deletions
diff --git a/wasm/Dockerfile b/wasm/Dockerfile
new file mode 100644
index 0000000..270026e
--- /dev/null
+++ b/wasm/Dockerfile
@@ -0,0 +1,66 @@
+FROM emscripten/emsdk:3.1.74
+
+RUN git clone --depth=1 --branch=php-8.4.2 https://github.com/php/php-src
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        autoconf \
+        bison \
+        pkg-config \
+        re2c \
+        && \
+    :
+
+# Define ZEND_MM_ERROR=0 for suppressing munmap() errors.
+RUN cd php-src && \
+    ./buildconf --force && \
+    emconfigure ./configure \
+        --disable-all \
+        --disable-mbregex \
+        --disable-fiber-asm \
+        --disable-cli \
+        --disable-cgi \
+        --disable-phpdbg \
+        --enable-embed=static \
+        --enable-mbstring \
+        --without-iconv \
+        --without-libxml \
+        --without-pcre-jit \
+        --without-pdo-sqlite \
+        --without-sqlite3 \
+        && \
+    EMCC_CFLAGS='-s ERROR_ON_UNDEFINED_SYMBOLS=0 -D ZEND_MM_ERROR=0' emmake make -j$(nproc) && \
+    mv libs/libphp.a .. && \
+    make clean && \
+    git clean -fd && \
+    :
+
+COPY php-wasm.c /src/
+
+RUN cd php-src && \
+    emcc \
+        -c \
+        -o php-wasm.o \
+        -I . \
+        -I TSRM \
+        -I Zend \
+        -I main \
+        ../php-wasm.c \
+        && \
+    mv php-wasm.o .. && \
+    make clean && \
+    git clean -fd && \
+    :
+
+RUN emcc \
+    -s ENVIRONMENT=web \
+    -s ERROR_ON_UNDEFINED_SYMBOLS=0 \
+    -s EXPORTED_RUNTIME_METHODS='["ccall"]' \
+    -s EXPORT_ES6=1 \
+    -s INITIAL_MEMORY=16777216 \
+    -s INVOKE_RUN=0 \
+    -s MODULARIZE=1 \
+    -o php-wasm.js \
+    php-wasm.o \
+    libphp.a \
+    ;
diff --git a/wasm/php-wasm.c b/wasm/php-wasm.c
new file mode 100644
index 0000000..9c71ca1
--- /dev/null
+++ b/wasm/php-wasm.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <emscripten.h>
+#include <Zend/zend_execute.h>
+#include <sapi/embed/php_embed.h>
+
+int EMSCRIPTEN_KEEPALIVE php_wasm_run(const char* code) {
+    zend_result result;
+
+    int argc = 1;
+    char* argv[] = { "php.wasm", NULL };
+
+    PHP_EMBED_START_BLOCK(argc, argv);
+
+    result = zend_eval_string_ex(code, NULL, "php.wasm code", 1);
+
+    PHP_EMBED_END_BLOCK();
+
+    fflush(stdout);
+    fflush(stderr);
+
+    return result == SUCCESS ? 0 : 1;
+}