2 Steps to use http referer in php

Step 2: How to get information in http referer

If you are using php, you can use $_SERVER to get its information.

For example, you can run code below in a php file.

<?php

print_r($_SERVER);

?>

If you open you test php page from other url, you will find a result like:

[HTTP_REFERER] => http://127.0.0.1/test.php

Then you will get information stored up in http referer.

Tips and Warnings:

(1)If your print $_SERVER in test.php and you open it in your browser address url directly, you will not find a item like:[HTTP_REFERER], because http referer has not stored up anyinformation, then you can not find it.