server http referer in php

Use php to forge a referer to prevent Image leeching. In short, HTTPReferer is a part of the header. when a browser sends a request to a web server, it usually carries a Referer to tell the server from which page What is HTTP Referer?In short, HTTP

When a browser sends a request to a web server, it usually carries a Referer to tell the server from which page the link is sent. the server obtains some information for processing, however, this Referer can be forged. let's take a look at the

What is HTTP RefererIn short, the HTTP Referer is part of the header, and when the browser sends the request to the Web server, it usually takes referer to tell the server which page link I took from, and the server can get some information for

When a browser sends a request to a web server, it usually carries a Referer to tell the server from which page the link is sent. the server obtains some information for processing, however, this Referer can be forged. let's take a look at the

What is HTTP RefererIn short, HTTP Referer is part of the header, and when the browser sends a request to the Web server, it usually takes a referer to tell the server where I came from, and the server can get some information for processing. For

When the browser to send a request to the Web server, usually bring referer, tell the server I was from which page chain, the server can get some information for processing, but this referer can be forged, the following look at an example, we will

  When the browser sends a request to the Web server, it usually takes a referer to tell the server where I came from, and the server can get some information for processing, but this referer can be forged, look at an example below, you will

Write a simple referer. php file in the test directory. The Code is as follows: Copy codeThe Code is as follows: If (! Isset ($ _ SERVER ["HTTP_REFERER"]) Echo "No Referer "; Else Echo $ _ SERVER ["HTTP_REFERER"]; ?> If you click the link above, the

$ _ SERVER ['http _ referer'] how to use this? $ _ SERVER ['http _ referer'] how to use it? & Lt ;? Php & nbsp; $ v_url =$ _ SERVER ['http _ referer']; & nbsp; p $ _ SERVER ['http _ referer? $ _ SERVER ['http _ referer'] how to use it? $ V_

# only allow access from don.com, the picture may be placed on the page of the Don.com website Setenvifnocase referer "^http://www.don.com/" Local_ref # Direct access via address Setenvif referer "^$" Local_ref