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run code in 300+ PHP versions simultaneously
<?php class Foo { function func($x) { return "Hello " . $x; } public $func; public function __construct() { $this->func = function($x) { return $x + 10; }; } } function main() { $foo = new Foo; var_dump($foo->func('World!')); var_dump(($foo->func)(1)); } main();

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52.34 ms | 402 KiB | 5 Q