'а','/A/'=>'А','/c/'=>'с','/C/'=>'С','/e/'=>'е', '/E/'=>'Е','/H/'=>'H','/K/'=>'К','/M/'=>'М','/o/'=>'о','/О/'=>'О', '/p/'=>'р','/P/'=>'Р','/T/'=>'Т','/x/'=>'х','/X/'=>'Х','/y/'=>'у',]; foreach ($arrayEnglish as $key=>$value){ $x=preg_replace($key,"[$value]", $x); } return $x; } echo "".checkAlphabet($string);