http://php.net/manual/en/reserved.variables.httpresponseheader.php
$context = stream_context_create(['http' => ['ignore_errors' => true]]);
$result = file_get_contents("http://example.com", false, $context);
var_dump($http_response_header);
http://php.net/manual/en/reserved.variables.httpresponseheader.php
$context = stream_context_create(['http' => ['ignore_errors' => true]]);
$result = file_get_contents("http://example.com", false, $context);
var_dump($http_response_header);