<?php // Date in the past header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Cache-Control: no-cache"); header("Pragma: no-cache"); ?> <html> <body> ... ... Note: There are options that users may set to change the browser's default caching settings. By sending ...
functionget_http_response_code($theURL){//https://php.net/manual/en/function.get-headers.php#97684$headers=get_headers($theURL);returnsubstr($headers[0],9,3);}echo get_http_response_code("https://yahoo.com"); It shows nothing on the page. From https://php.net/manual/en/function.g...