$http_response_header — HTTP response headers
The $http_response_header array is similar to the get_headers() function. When using the HTTP wrapper, $http_response_header will be populated with the HTTP response headers.
Пример #1 $http_response_header example
<?php
file_get_contents("http://example.com");
var_dump($http_response_header);
?>
Результатом выполнения данного примера будет что-то подобное:
array(9) { [0]=> string(15) "HTTP/1.1 200 OK" [1]=> string(35) "Date: Sat, 12 Apr 2008 17:30:38 GMT" [2]=> string(29) "Server: Apache/2.2.3 (CentOS)" [3]=> string(44) "Last-Modified: Tue, 15 Nov 2005 13:24:10 GMT" [4]=> string(27) "ETag: "280100-1b6-80bfd280"" [5]=> string(20) "Accept-Ranges: bytes" [6]=> string(19) "Content-Length: 438" [7]=> string(17) "Connection: close" [8]=> string(38) "Content-Type: text/html; charset=UTF-8" }