$times = 100000;

$result = array();

// preg_match
// regexp is stolen from:
// https://github.com/php/php-src/blob/master/ext/filter/logical_filters.c#L525
$regexp = "/^(((([1]?\d)?\d|2[0-4]\d|25[0-5])\.){3}(([1]?\d)?\d|2[0-4]\d|25[0-5]))|([\da-fA-F]{1,4}(\:[\da-fA-F]{1,4}){7})|(([\da-fA-F]{1,4}:){0,5}::([\da-fA-F]{1,4}:){0,5}[\da-fA-F]{1,4})$/iD";

$ip4 = '123.123.123.123';
$ip6 = '2001:0db8:85a3:0042:1000:8a2e:0370:7334';


$start_m = microtime();
$start = time();
for ($i=0; $i < $times; $i++){
      preg_match($regexp, $ip4);
      preg_match($regexp, $ip6);
}

$end_m = microtime();
$end = time();
$bench = ($end - $start) + ($end_m - $start_m);
$result["preg_match"] = $bench;

// filter_var
$start_m = microtime();
$start = time();
for ($i=0; $i < $times; $i++){
      filter_var($ip6, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6);
      filter_var($ip4, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6);
}

$end_m = microtime();
$end = time();
$bench = ($end - $start) + ($end_m - $start_m);
$result["filter_var"] = $bench;

var_dump(array(
  "times" => $times,
  "results" => $result
));