How to prevent external malicious submissions from calling the ajax interface in PHP

This article briefly introduces how to prevent external malicious calls to the ajax interface to save traffic and reduce server pressure.

If we use the ajax interface written by our own website for ourselves, we should limit the source domain name and determine the source.

Note: Replacewww.jb51.netwith your own domain name.

Copy codeThe code is as follows:

//Judge the source
if(!isset($_SERVER['HTTP_REFERER']) || ! stripos($_SERVER['HTTP_REFERER'],'www.jb51.net')) {
echo 'cann`t access';
exit();
}

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