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<?php $day = 10; $month = 12; $year = 88; $format = strlen($year) == 2 ? "y-m-d" : "Y-m-d"; $dt = date_create_from_format($format, $year.'-'.$month.'-'.$day)->format("Y-m-d"); print_r($dt);
Output for 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
1988-12-10

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218.06 ms | 403 KiB | 288 Q