PHP防止图片盗用(盗链)的方法小结

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$ [NC]
RewriteCond %{HTTP_REFERER} !simcole. [NC]
RewriteCond %{HTTP_REFERER} !zhuaxia. [NC]
RewriteCond %{HTTP_REFERER} !google. [NC]
RewriteCond %{HTTP_REFERER} !baidu. [NC]
RewriteCond %{HTTP_REFERER} !bloglines. [NC]
RewriteRule .(jpg|gif|png|bmp|swf|jpeg) /image/replace.gif [R,NC,L]
RewriteRule ^(.)$ http://image.simcole./image/$1 [L]

RewriteCond %{HTTP_REFERER} !^$ [NC]
RewriteCond %{HTTP_REFERER} !simcole. [NC]
RewriteCond %{HTTP_REFERER} !zhuaxia. [NC]
RewriteCond %{HTTP_REFERER} !google. [NC]
RewriteCond %{HTTP_REFERER} !baidu. [NC]
RewriteCond %{HTTP_REFERER} !bloglines. [NC]

RewriteRule .(jpg|gif|png|bmp|swf|jpeg) /image/replace.gif [R,NC,L]

RewriteRule ^(.)$ http://image.simcole./image/$1 [L]

# options the .htaess files in directories can override.
# Edit apache/conf/httpd.conf to AllowOverride in .htaess
# AllowOverride AuthConfig
# S the directory list from being shown
Options -Indexes
# Controls who can get stuff from this server.
Order Deny,Allow
Deny from all
Allow from localhost

class imgdata{
public $imgsrc;
public $imgdata;
public $imgform;
public function getdir($source){
$this->imgsrc = $source;
}
public function img2data(){
$this->_imgfrom($this->imgsrc);
return $this->imgdata=fread(fopen($this->imgsrc,'rb'),filesize($this->imgsrc));
}
public function data2img(){
header("content-type:$this->imgform");
echo $this->imgdata;
//echo $this->imgform;
//imagecreatefromstring($this->imgdata);
}
public function _imgfrom($imgsrc){
$info=getimagesize($imgsrc);
//var_dump($info);
return $this->imgform = $info['mime'];
}
}
$n = new imgdata;
$n -> getdir("1.jpg"); //图片路径，一般存储在数据库里，用户无法获取真实路径,可根据图片ID来获取
$n -> img2data();
$n -> data2img();

location / {
root /usr/local/nginx/html;
auth_basic "Auth";
auth_basic_user_file /usr/local/nginx/conf/htpasswd;
index index.php index.htm;
}