(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.
This function has no parameters.
Returns an indexed array of HTTP headers
which were received while using the
HTTP wrapper.
If there are none, null is returned instead.
Example #1 http_get_last_response_headers() example
Description.
<?php
file_get_contents("http://example.com");
var_dump(http_get_last_response_headers());
?>The above example will output something similar to:
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: 2024年11月11日 13:34:09 GMT"
[6]=>
string(23) "Etag: "3147526947+gzip""
[7]=>
string(38) "Expires: 2024年11月18日 13:34:09 GMT"
[8]=>
string(44) "Last-Modified: 2019年10月17日 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"
}
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;
}
}