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+# PHPHP
+
+PHPHP is a self-hosted interpreter of tiny subset of PHP implemented in pure PHP.
+
+## Requirements
+
+- PHP 8.4
+
+## Installation
+
+No runtime dependencies!
+
+## Usage
+
+```bash
+php index.php
+```
+
+It will output the following:
+
+```
+Running on PHP
+Running on PHPHP on PHP
+Hello, World!
+```
+
+The script, [hello.php](./hello.php), is executed on PHPHP on PHP.
+
+## Talks
+
+[Talk in PHPerKaigi 2025 (in Japanese)](https://fortee.jp/phperkaigi-2025/proposal/ef8480fc-1403-4020-9f24-aca9361f51e4)
+
+## License
+
+See [LICENSE](./LICENSE).