3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $clbk; public function __construct($b = false) { $f = new self(); if($b) { $this->clbk = function() use ($f) { return $f; } } } } $f = new Foo(true); var_dump($f->clbk());
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.29, 5.6.8 - 5.6.13
Parse error: syntax error, unexpected '}' in /in/vmcnj on line 11
Process exited with code 255.

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