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PHP : Function Reference : Network Functions : headers_list

headers_list

Returns a list of response headers sent (or ready to send) (PHP 5)
array headers_list ( )

Example 1602. Examples using headers_list()

<?php

/* setcookie() will add a response header on its own */
setcookie('foo', 'bar');

/* Define a custom response header
  This will be ignored by most clients */
header("X-Sample-Test: foo");

/* Specify plain text content in our response */
header('Content-type: text/plain');

/* What headers are going to be sent? */
var_dump(headers_list());

?>

The above example will output:

array(4) {
 [0]=>
 string(23) "X-Powered-By: PHP/5.1.3"
 [1]=>
 string(19) "Set-Cookie: foo=bar"
 [2]=>
 string(18) "X-Sample-Test: foo"
 [3]=>
 string(24) "Content-type: text/plain"
}

Code Examples / Notes » headers_list

leo

If I change in de above code "php.net" for antoher URL, de code doesn't work properly.
How can it be made in a way like this:
http://webtools.live2support.com/header.php
I spent a hole evening, but I found only a way to make the output more readable:
<?php
function get_headers($host, $url)
{
$headers = array();
$fp = fsockopen ($host, 80, $errno, $errstr, 45);
if ($fp)
{
fputs ($fp, "GET $url HTTP/1.0\r\n\r\n");
while (!feof($fp))
{
$char = fgetc($fp);
if($char === "\n")
{
if (ord($header) === 13) { return($headers); }
else { array_push($headers, trim($header)); }
unset($header);
}
else { $header = $header.$char; }
}
fclose ($fp);
}
}
$Array = get_headers("php.net", "/");
// print_r(get_headers("php.net", "/"));
echo "

\n";
foreach ($Array as $Key => $Value)
{
echo "<LI>\$_SERVER[\"$Key\"]=$Value\n";
if ($Key == 6)
 $Cookie = $Value;
} # End of foreach ($_SERVER as $Key=>$Value)
 echo "

\n";
 echo "Cookie = $Cookie
\n";
?>
Here I do a check with, for example, key 6, to seperated them from the other values, just for example.
My problem is that the code does not accept www.mysite.com or http://www.mysite.com


ejsexton82

I don't know if there is already a function for this or not, but I wrote one anyways.
<?PHP
function headers_array() {
$return = array();
$headers = headers_list();
foreach($headers as $header) {
if(strpos($header,':') === false) $return[0] = $header;
else {
$parsed = explode(':',$header,2);
$return[$parsed[0]] = trim($parsed[1]);
}
}
return $return;
}

var_dump(headers_array());
?>
yeilds:
array(5) {
 ["X-Powered-By"]=>
 string(9) "PHP/5.2.4"
 ["Expires"]=>
 string(29) "Thu, 19 Nov 1981 08:52:00 GMT"
 ["Cache-Control"]=>
 string(62) "no-store, no-cache, must-revalidate, post-check=0, pre-check=0"
 ["Pragma"]=>
 string(8) "no-cache"
 ["Content-type"]=>
 string(9) "text/html"
}


luke

I arrived here looking for a way to collect headers sent by a remote server. No such luck; so:
<?php
function get_headers($host, $url)
{
  $headers = array();
  $fp = fsockopen ($host, 80, $errno, $errstr, 45);
  if ($fp)
  {
     fputs ($fp, "GET $url HTTP/1.0\r\n\r\n");
     while (!feof($fp))
     {
        $char = fgetc($fp);
        if($char === "\n")
        {
           if (ord($header) === 13) {  return($headers); }
           else { array_push($headers, trim($header)); }
           unset($header);
        }
        else { $header = $header.$char; }
     }
     fclose ($fp);
  }
}
?>
print_r(get_headers("php.net", "/"));
Array
(
   [0] => HTTP/1.1 200 OK
   [1] => Date: Sat, 02 Sep 2006 13:47:02 GMT
   [2] => Server: Apache/1.3.37 (Unix) PHP/5.2.0-dev
   [3] => X-Powered-By: PHP/5.2.0-dev
   [4] => Last-Modified: Sat, 02 Sep 2006 13:21:09 GMT
   [5] => Content-language: en
   [6] => Set-Cookie: COUNTRY=USA%2C68.37.136.230; expires=Sat, 09-Sep-2006 13:47:02 GMT; path=/; domain=.php.net
   [7] => Connection: close
   [8] => Content-Type: text/html; charset=utf-8
)


robertbienert

Also note that Lukes code could be simplified if using the HTTP HEAD method, because it returns only the HTTP headers, not the whole resource.

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