$re = '/(\+41|0041|0){1}(\(0\))?[0-9]{2}[\s.-]?[0-9]{3}[\s.-]?[0-9]{2}[\s.-]?[0-9]{2}$/m';
$str = '0782342323
0041782342323
+41782342323
078.234.23.23
004178.234.23.23
+4178.234.23.23
078-234-23-23
004178-234-23-23
+4178-234-23-23
078 234 23 23
004178 234 23 23
+4178 234 23 23';
preg_match_all($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