3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "some_text_v1_I2_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; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
1

preferences:
217.5 ms | 406 KiB | 327 Q