クロージャ | PHP 拡張 ext-php-rs

README.md

クロージャ | PHP 拡張 ext-php-rs

Cargo.toml

[package]
name = "closure-project"
version = "0.1.0"
edition = "2024"

[lib]
crate-type = ["cdylib"]

[dependencies]
ext-php-rs = "0.15"

src/lib.rs

use ext_php_rs::prelude::*;
use ext_php_rs::types::{ZendCallable, Zval};

#[php_function]
pub fn call_with_42(callback: ZendCallable) -> PhpResult<Zval> {
    let arg: i64 = 42;

    // try_call は「参照」を渡す
    let result = callback.try_call(vec![&arg])?;

    Ok(result)
}

#[php_module]
pub fn get_module(module: ModuleBuilder) -> ModuleBuilder {
    module.function(wrap_function!(call_with_42))
}

実行

cargo build

php -d extension=target/debug/libphp_warp_server.so test.php

test.php

<?php
echo call_with_42(fn(int $x) => $x * 2), PHP_EOL;