PHP headers_list() Function

Example

Return a list of response headers sent:

<?php
setcookie("TestCookie","SomeValue");
header("X-Sample-Test: foo");
header("Content-type: text/plain");
?>

<html>
<body>

<?php
var_dump(headers_list());
?>

</body>
</html>

The output of the code above could be:

array(4)
{
[0]=> string(23) "X-Powered-By: PHP/7.1.1"
[1]=> string(19) "Set-Cookie: TestCookie=SomeValue"
[2]=> string(18) "X-Sample-Test: foo"
[3]=> string(24) "Content-type: text/plain"
}

Definition and Usage

The headers_list() function returns a list of response headers to be sent to the browser.

Tip: To determine whether or not the headers have been sent yet, use the headers_sent() function.

Syntax

headers_list()

Technical Details

Return Value:	A numerically indexed array of headers on success
PHP Version:	5.0+

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