$re = '/([+]{0,1}[\d]{1,5}[\s]{0,1}[\/]{0,1}[(]{0,1}[\d]{0,3}[)]{0,1}\s{0,1}\d{2,4}[-]{0,1}[\s]{0,1}[\d]{2,4}[-]{0,1}[\s]{0,1}[\d]{1,4})/m';
$str = '061 833 315
+387 61 853 512
moj broj telefona je +385 (99) 223-45-67
drugi broj 061/865-326 ';
preg_match_all($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