<?php $sRegex = "/([A-Z]|[a-z]|[0-9]| |Ñ|ñ|!|"|%|&|'|´|-|:|;|>|=|<|@|_|,|\{|\}|`|~|á|é|í|ó|ú|Á|É|Í|Ó|Ú|ü|Ü){1,300}/"; $sTest = "Hello world"; var_dump(preg_match($sRegex, $sTest)); // returns false var_dump(preg_last_error()); // returns 0
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