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run code in 500+ PHP versions simultaneously
<?php $data = [['a']]; array_map(reset(...), $data);
Output for 8.3.5 - 8.3.18, 8.4.9 - 8.4.21, 8.5.3 - 8.5.7
Warning: reset(): Argument #1 ($array) must be passed by reference, value given in /in/T4rPe on line 4
preferences:
49.6 ms | 519 KiB | 4 Q