3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'fd.com..ec'; $pattern = '/^[A-Z0-9.-]+\.[A-Z]{2,}\b/i'; var_dump(preg_match($pattern, $str)); /*function validaEmailUsername($str){ $allowed = array("-", ".", "_"); // you can add here more value, you want to allow. $regExp = implode($allowed); $str = trim($str); //valido inicio y fin del username no tenga .-_ if( (preg_match('/^['.$regExp.']|['.$regExp.']$/i', $str) == 0) && (strlen($str) > 5) ) { $count_special_char = preg_match_all("/[".$regExp."]/i", $str, $matches); if( ctype_alnum(str_replace($allowed, '', $str )) && ($count_special_char == 0 || $count_special_char == 1) ){ $badWords = array("usuario","user","test","demo","notiene", "prueba", ".com", ".net"); $matches = array(); $matchFound = preg_match_all("/\b(" . implode($badWords,"|") . ")\b/i", $str, $matches); if ($matchFound){ return false; } return true; } } return false; }*/
based on R8laZ
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
int(1)