3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Custom { public $sum = NULL; function __construct() { $this->sum = function ($a, $b) {return $a + $b;}; } } $cl = new stdClass; $cl->sum = function ($a, $b) {return $a + $b;}; $custom = new Custom(); echo ($custom->sum)(44, 44); echo ($cl->sum)(33, 33);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
8866
preferences:
144.71 ms | 407 KiB | 5 Q