Getting header response code

Question

This is part of a PHP script I am putting together. Basically a domain ($domain1) is defined in a form and a different message is displayed, based on the response code from the server. However, I am having issues getting it to work. The 3 digit response code is all I am interested in.

Here is what I have so far:

function get_http_response_code($domain1) {
    $headers = get_headers($domain1);
    return substr($headers[0], 9, 3);
    foreach ($get_http_response_code as $gethead) { 
        if ($gethead == 200) {
            echo "OKAY!";
        } else {
            echo "Nokay!";
        }
    }
}

Answer 1

$domain1 = 'http://google.com';

function get_http_response_code($domain1) {
  $headers = get_headers($domain1);
  return substr($headers[0], 9, 3);
}

$get_http_response_code = get_http_response_code($domain1);

if ( $get_http_response_code == 200 ) {
  echo "OKAY!";
} else {
  echo "Nokay!";
}

Answer 2

If you have PHP 5.4.0+ you can use the http_response_code() function. Example:

var_dump(http_response_code()); // int(200)