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<?php $input_date = '1912-12-22'; if(!preg_match("[0-9]{4}-(0[1-9]|1[012])-(0[1-9]|1[0-9]|2[0-9]|3[01])",$input_date, $aux_date)) echo 'match';
Output for 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.3.6
Warning: preg_match(): Unknown modifier '{' in /in/nkWjN on line 3 match
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '{' in /in/nkWjN on line 3 match
preferences:
326.61 ms | 401 KiB | 460 Q