$re = '/(?:[^;]*;){3}([^;]*);/';
$str = '00.000000 00.000000; X-XX000-0000-0; France; Paris; Street 12a;';
preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
// Print the entire match result
var_dump($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