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<?php $date="2012-09-12"; if (preg_match("^[0-9]{4}-[0-1][0-9]-[0-3][0-9]$",$date)) { return true; }else{ return false; }
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): No ending delimiter '^' found in /in/s8WNQ on line 4
Output for hhvm-3.12.0
Warning: No ending delimiter '^' found: [^[0-9]{4}-[0-1][0-9]-[0-3][0-9]$] in /in/s8WNQ on line -1
Output for hhvm-3.10.0
Warning: No ending delimiter '^' found: [^[0-9]{4}-[0-1][0-9]-[0-3][0-9]$] in /in/s8WNQ on line 4
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/s8WNQ on line 4