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<?php $subject = '512345678'; $failingPattern = '/^(?:[3-5789]\d{8})$/x'; $result = preg_match($failingPattern , $subject, $groups); var_dump($result, $groups);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.3 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
int(1) array(1) { [0]=> string(9) "512345678" }
Output for 7.0.0 - 7.0.2
int(0) array(0) { }
preferences:
206.17 ms | 401 KiB | 267 Q