$re = '/(?<!\S)(?:(?:\+|00)33|0)\s*[1-9](?:[\s.-]*\d{2}){4}/m';
$str = 'My phone number is 06 06 06 06 06.
But this one can write +33 606 06 06 06.
My facebook profile is https://www.facebook.com/profile.php?id=100060606060606.';
preg_match_all($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