3v4l.org

run code in 300+ PHP versions simultaneously
<?php $i = 0; $arr = array(); for($i = 0; $i <= 100; $i++){ $arr[$i] = rand(0, 1000); } echo 'key is $arr['.array_search(123, $arr).']'; ?>

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33.08 ms | 402 KiB | 5 Q