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headers_list

(PHP 5, PHP 7)

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

Descrierea

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().

Valorile întoarse

Returns a numerically indexed array of headers.

Exemple

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());

?>

Exemplul de mai sus va afișa:

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"
}

Note

Notă:

Antetele vor fi accesibile și afișate doar atunci când este utilizat un SAPI care le susține.

A se vedea și

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User Contributed Notes 3 notes

up
14
Anonymous
4 years ago
note that it does not return the status header

<?php

header
('HTTP/1.1 301 Moved Permanently', true, 301);

header('foo: bar');
header('a: b');
header('colon less example');

print_r(headers_list());
?>

Array
(
    [0] => X-Powered-By: PHP/5.4.7
    [1] => foo: bar
    [2] => a: b
)
up
2
SOLO2
4 years ago
Function to check if a particular header has been added to the list:

<?php

function header_sent($header) {
   
$headers = headers_list();
   
$header = trim($header,': ');
   
$result = false;

    foreach (
$headers as $hdr) {
        if (
stripos($hdr, $header) !== false) {
           
$result = true;
        }
    }

    return
$result;
}

?>
up
0
arnold at jasny dot net
28 days ago
This function won't work for when you're running PHP from the command line. If will always return an empty array. This can be an issue when testing your project using PHPUnit or Codeception.

To solve this, install the xdebug extension and use `xdebug_get_headers` when on the cli.

<?php
$headers
= php_sapi_name() === 'cli' ? xdebug_get_headers() : headers_list();
?>
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