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run code in 300+ PHP versions simultaneously
<?php $a = []; $a['3'] = 1; var_dump($a);
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array(1) { [3]=> int(1) }
preferences:
65.21 ms | 406 KiB | 5 Q