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headers_sent> <header
[edit] Last updated: Fri, 22 Jul 2011

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headers_list

(PHP 5)

headers_listReturns a list of response headers sent (or ready to send)

Description

array headers_list ( void )

headers_list() will return a list of headers to be sent to the browser / client. To determine whether or not these headers have been sent yet, use headers_sent().

Return Values

Returns a numerically indexed array of headers.

Examples

Example #1 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"
}

Notes

Note:

Headers will only be accessible and output when a SAPI that supports them is in use.

See Also



headers_sent> <header
[edit] Last updated: Fri, 22 Jul 2011
 
add a note add a note User Contributed Notes headers_list
slick[ at ]iqlogin[ dot ]net 08-Apr-2008 04:52
To: leo at leoberkhout dot nl,

in PHP 5.0 get_headers() already exists so when i went through your code and organized it i had a small problem with that. Other than that when i changed the function name it worked fine. Of course i did tweak a few minor things to make it so. But this is what i've got.

<?php
   
function gimme_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);
        }
    }
    if(isset(
$_GET['uri'])) {
       
$uri = $_GET['uri'];
    }
    else {
       
$uri = 'php.net';
    }
   
$array = gimme_headers($uri, "/");
    print
'Cookie list for ' . $uri;
    print
'<ul>';
    foreach (
$array as $key => $value) {
        print
'<li>' . $_SERVER[$key] . ' = ' . $value . '</li>';
    }
    print
'</ul>';
?>
leo at leoberkhout dot nl 23-Oct-2006 08:40
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 "<P>\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 "<P>\n";
  echo
"Cookie = $Cookie<BR>\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
robertbienert at gmx dot net 27-Sep-2006 01:59
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.
Luke at Bonanomi dot com 02-Sep-2006 01:56
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
)

 
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