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<?php $nationalNumber = "4732691234"; $nationalNumberPattern = '[4589]\d{9}'; $final_pattern = '(?:' . $nationalNumberPattern . ')'; $final_pattern = '^' . $final_pattern . '$'; $final_pattern = '/' . $final_pattern . '/x'; $b = (preg_match($final_pattern, $nationalNumber, $groups, PREG_OFFSET_CAPTURE) == 1) ? true : false; var_dump($final_pattern, $nationalNumber, $b, $groups);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(20) "/^(?:[4589]\d{9})$/x" string(10) "4732691234" bool(true) array(1) { [0]=> array(2) { [0]=> string(10) "4732691234" [1]=> int(0) } }

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178.62 ms | 406 KiB | 314 Q