(PHP 5, PHP 7, PHP 8)
headers_list — Returns a list of response headers sent (or ready to send)
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().
Questa funzione non contiene parametri.
Returns a numerically indexed array of headers.
Example #1 Example 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("Example-Test: foo");
/* Specify plain text content in our response */
header('Content-Type: text/plain; charset=UTF-8');
/* What headers are going to be sent? */
var_dump(headers_list());
?>Il precedente esempio visualizzerà qualcosa simile a:
array(3) {
[0]=>
string(19) "Set-Cookie: foo=bar"
[1]=>
string(17) "Example-Test: foo"
[2]=>
string(39) "Content-Type: text/plain; charset=UTF-8"
}
Nota:
Gli header sono accessibili (e emessi nell'output) quando è in uso un SAPI che li supporta.
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
)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();
?>