PHP website construction PHP website source code (for search engines)

Copy code The code is as follows:

function get_referer(){
$se = 0;
$url = $_SERVER["HTTP_REFERER"]; //Get the complete source URL
$str = str_replace( "http://","",$url); //Remove http://
$strdomain = explode("/",$str); // Separate into arrays with "/"
$domain = $strdomain [0]; //Get the characters before the first "/"
if(strstr($domain,'baidu.com')){
$se = 1;
}
else if(strstr($domain,' google.cn')){
$se = 1;
}
return $se;
}

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