3v4l.org

run code in 300+ PHP versions simultaneously
<?php //echo preg_replace('/(?:(?!dog).)++/', '<$0>', 'where my dog is now?'); preg_match_all('/[^a]/', 'бaabaabaaaaabbb', $a); print_r($a);

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38.63 ms | 402 KiB | 5 Q