http_get_last_response_headers()

http_get_last_response_headers() — Retrieve last HTTP response headers.

Built-in function of PHP 8.5. The manual lists it as available in PHP 8 >= 8.4.0. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

Returns an array containing the last HTTP response headers received via the HTTP wrapper. If there are none, null is returned instead.

Signature

http_get_last_response_headers(): ?array

Parameters

This function takes no parameters.

Return value

Returns an indexed array of HTTP headers which were received while using the HTTP wrapper. If there are none, null is returned instead.

Example

A runnable snippet:

file_get_contents("http://example.com"); var_dump(http_get_last_response_headers());

Output:

array(14) { [0]=> string(15) "HTTP/1.1 200 OK" [1]=> string(20) "Accept-Ranges: bytes" [2]=> string(11) "Age: 326940" [3]=> string(29) "Cache-Control: max-age=604800" [4]=> string(38) "Content-Type: text/html; charset=UTF-8" [5]=> string(35) "Date: Mon, 11 Nov 2024 13:34:09 GMT" [6]=> string(23) "Etag: "3147526947+gzip"" [7]=> string(38) "Expires: Mon, 18 Nov 2024 13:34:09 GMT" [8]=> string(44) "Last-Modified: Thu, 17 Oct 2019 07:18:26 GMT" [9]=> string(24) "Server: ECAcc (nyd/D16C)" [10]=> string(21) "Vary: Accept-Encoding" [11]=> string(12) "X-Cache: HIT" [12]=> string(20) "Content-Length: 1256" [13]=> string(17) "Connection: close" }