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run code in 300+ PHP versions simultaneously
<?php function x(){ throw new Exception; } try { $a = 'meukee'; $x = $a ?? x(); var_dump($x); $a = null; $x = $a ?? x(); var_dump($x); } catch (Exception $e) { var_dump($x); # unchanged }
Output for 7.1.25 - 7.1.30, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(6) "meukee" string(6) "meukee"

preferences:
98.94 ms | 1435 KiB | 4 Q