You cannot polyfill http_get_last_response_headers because the $http_response_header has to be in scope for it to be read. As soon as you put it in a function, it's out of scope.
(PHP 8 >= 8.4.0)
http_get_last_response_headers — Retrieve last HTTP response headers
Returns an array containing the last HTTP
response headers received via the
HTTP wrapper.
If there are none, null is returned instead.
У цієї функції немає параметрів.
Returns an indexed array of HTTP headers
which were received while using the
HTTP wrapper.
If there are none, null is returned instead.
Приклад #1 http_get_last_response_headers() example
Description.
<?php
file_get_contents("http://example.com");
var_dump(http_get_last_response_headers());
?>Поданий вище приклад виведе щось схоже на:
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"
}
You cannot polyfill http_get_last_response_headers because the $http_response_header has to be in scope for it to be read. As soon as you put it in a function, it's out of scope.For PHP versions < 8.4, you can write a polyfill to be prepared for the future:
if ( ! function_exists("http_get_last_response_headers") ) {
function http_get_last_response_headers() {
if ( ! isset($http_response_header) ) {
return null;
}
return $http_response_header;
}
}