php - Allow requests from certain URL's only -


i've made css template can sell. css hosted on server. want site's paid have access file, thought of php file echo's css, if url exists in array.

<?php  header("content-type: text/css");  $allowedurls = ['google.com', 'facebook.com'];  $thisurl = "http://urlfromrequester.com"; //??? $thisurl = str_ireplace('www.', '', $thisurl); $thisurl = (parse_url($thisurl, php_url_host));  foreach ($allowedurls $url) {     if ($url == $thisurl) {         $css = file_get_contents('thecssfile.css');     } else {         $css = file_get_contents('filewithlinktobuypage.css');     } }  echo($css);

this safe way print css when host bought css file. how can url of requester?

people buy file use this: <link rel="stylesheet" type="text/css" href="http://domain.com/checklicence.php">

thanks

you can use:

$_server['http_referer'];

take consider though, referral address set user agent. not user agents set this, , provide ability modify http_referer feature. in short, cannot trusted.


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