PHP禁止图片盗链_PHP
1、假设充许连结图片的主机域名为：www.test.com
2、修改httpd.conf
SetEnvIfNoCase Referer "^http://www.test.com/" local_ref=1
Order Allow,Deny
Allow from env=local_ref
这个简单的应用不光可以解决图片盗链的问题，稍加修改还可以防止任意文件盗链下载的问题。
使用以上的方法当从非指定的主机连结图片时，图片将无法显示，如果希望显示一张“禁止盗链”的图片，我们可以用mod_rewrite 来实现。
首先在安装 apache 时要加上 --enable-rewrite 参数加载 mod_rewrite 模组。
假设“禁止盗链”的图片为abc.gif，我们在 httpd.conf 中可以这样配置：
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?test.com /.*$ [NC]
RewriteRule \.(gif|jpg)$ http://www.test.com/abc.gif [R,L]
当主机的图片被盗链时，只会看到 abc.gif 这张“禁止盗链”的图片！
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