When using fopen() to open an URL, $http_response_header
is empty if the server responds with a 4xx or 5xx status.

My script:

<?php

  $fp = fopen('http://localhost/no-such-file.txt', 'r');
  print_r($http_response_header);

?>


With PHP 4.2.3 I get

Warning:fopen("http://localhost/no-such-file.txt", "r") - Network is unreachable in /home/errath/packages/php-4.2.3/test.php on line 3
Array
(
    [0] => HTTP/1.1 404 Not Found
    [1] => Date: Thu, 10 Apr 2003 10:06:38 GMT
    [2] => Server: Apache/1.3.23 (Unix)
    [3] => Connection: close
    [4] => Content-Type: text/html; charset=iso-8859-1
)

but with PHP 4.3.1 and 4.3.2RC1 I get:

Warning: fopen(http://localhost/no-such-file.txt)
[http://www.php.net/function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found
 in /home/errath/packages/php-4.3.2RC1/test.php on line 3
Array
(
)