PHP to rust FFI example

php-to-rust/src/ffi.php

@@ -0,0 +1,9 @@
+<?php
+
+$libExtension = (PHP_OS_FAMILY == "Darwin" ? 'dylib' : 'so');
+
+$ffi = FFI::cdef(
+    "int32_t double_input(int32_t input);",
+    "target/debug/libdouble_input.$libExtension");
+var_dump($ffi->double_input(3));
+?>

php-to-rust/src/lib.rs

@@ -0,0 +1,5 @@
+#[no_mangle]
+pub extern fn double_input(input: i32) -> i32 {
+    input * 2
+}
+