PHP and JS to determine the routing to the specified page

PHP jumps according to Referer:

The code is as follows	Copy Code
<?php $ref = $_server[' Http_referer ']; if (Stripos ($ref, "Baidu") | | stripos ($REF, "Google") { Header ("Location:http://www.111cn.net"); Exit } ?>

Jump according to UA:

The code is as follows	Copy Code
<?php $userAgent = $_server[' http_user_agent ']; if (Stripos ($userAgent, "Moz") | | stripos ($userAgent, "Baidu")) { Header ("Location:http://www.111cn.net"); } ?>

The header () function is defined as follows:

void header (String string [, bool replace [, int http_response_code]])

Optional parameter replace indicates whether to replace the previous similar header or to add a header of the same type, which defaults to replace.

The Second optional parameter Http_response_code forces the HTTP corresponding code to the specified value. The header of the location type in the header function is a special header invocation that is commonly used to implement page jumps. Note: 1.location and ":" No space between, otherwise will not jump.

JS Judgment method:

The code is as follows	Copy Code
<script> var s=document.referrer; if (S.indexof ("Baidu") >0| | S.indexof ("Soso") >0| | S.indexof ("Google") >0| | S.indexof ("yahoo") >0| | S.indexof ("Sogou") >0| | S.indexof ("Youdao") >0| | S.indexof ("Bing") >0) { Self.location= "Http://www.111cn.net"; } </script>