3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = range(1, 10); preg_grep('/asdf/', $array); foreach ($array as $k => $v) { print $k; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
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preferences:
145.73 ms | 403 KiB | 184 Q