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run code in 300+ PHP versions simultaneously
<?php // function foo(&$val) { // $val->b = 1; // return $val; // } // foo($a); var_dump($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $a in /in/NmHeD on line 10 NULL
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.3.33, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: a in /in/NmHeD on line 10 NULL
Output for 7.3.32, 7.4.26
NULL

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