$re = '/^(((\+?[0-9]{2})?\(?[0-9]{2}\)?)?([0-9]?[0-9]{4}\-?[0-9]{4}))$/m';
$str = '+55(91)3348-0276
559133480276
(91)3348-0276
9133480276
3348-0276
33480276
+55(91)98444-6776
5591984446776
(91)98444-6776
91984446776
98444-6776
984446776';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
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