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<?php $postal_code_to_check = substr('m3a3b3', 0, 3); $patterns = array( '[A]{1}[0]{1}[P-Z]{1}', '[A]{1}[2]{1}[V]{1}', '[G]{1}[0]{1}[G]{1}', '[G]{1}[4]{1}[T]{1}', '[R]{1}[0]{1}[B]{1}', ); $regex = "/^(" . implode('|', $patterns) . ")$/i"; if (preg_match($regex, $postal_code_to_check)) { print_f('Matched!'); }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
162.18 ms | 404 KiB | 207 Q