$re = '/^(?:\+[0-9]{2}\s)?(?:\([0-9]{3}\)|[0-9]{3})\s[0-9]{3}(-|\s)[0-9]{2}\1[0-9]{2}/mix';
$str = '+38 (093) 937-99-92
093 937 99 92
(093) 937 99 92';
$subst = "\1and\4";
$result = preg_replace($re, $subst, $str);
echo "The result of the substitution is ".$result;
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php