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run code in 300+ PHP versions simultaneously
<?php class A { public $a = 'public'; } $m = function (){ $x =& $this; $x = new stdClass; var_dump($this, $this->a); }; $a = new A; $m = $m->bindTo($a); $m();

preferences:
44.86 ms | 402 KiB | 5 Q