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<?php $d = '23/02/2013 '; $match = '/\b(0[1-9]|[12][0-9]|3[01])\/(0[1-9]|1[012])\/\d{4}(\s(0[1-9]|1[012]))?/'; var_dump(preg_match($match, $d)); exit; $t = new DateTime(str_replace('/', '-', $d)); print $t->format('d/m/Y');
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, 5.5.0 - 5.5.35, 5.6.0 - 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 - 8.3.6
int(1)

preferences:
260.36 ms | 405 KiB | 360 Q