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<?php $code = "CFnoso2015DENS"; $regex = "^(CFnoso2015)[A-Z]{2}(NS)$"; echo preg_match($regex, $code) === 1;
Output for 4.3.11 - 7.1.7
Warning: preg_match(): No ending delimiter '^' found in /in/ENj88 on line 4
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '^' found in /in/ENj88 on line 4