3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "some_text_v1_I1_some_mote__text"; $b = 2; $c = $b - 1; $d = $b + 1; $c = "/(i(ssue)?(" . $b . "\d)|(\d" . $b . "))|(i(ssue)?[0-" . ($b - 1) . ($b + 1) . "-9])|(faculty)|(Internal)|(Final)/i"; if (!preg_match($c, $a)) { echo 1; } else { echo 2; }

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27.04 ms | 402 KiB | 5 Q