$re = '/(?: *[-+().]? *\d){6,14}/m';
$str = 'sDlkjazsdklzdjsdasz+49 123 999dszDLJhfadslkjhds0001 123.456sL:hdLKJDHS+31 (0) 8123zsKJHSDlkhzs&^#%Q(999)9999999adlfkhjsflj(999)999-9999sDLKO*$^9999999999adf;jhklslFjafhd9999999999999zdlfjx,hafdsifgsiaUDSahj';
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