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run code in 300+ PHP versions simultaneously
<?php class C { public $ello = 'ello'; public $c; public $m; function __construct($y){ $this->c = static function($f){ return $f()."ello"; }; $this->m = function(){ return "h"; }; } } $x = new C("h"); $f = $x->c; echo $f($x->m);
Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
hello

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146.2 ms | 404 KiB | 217 Q