PHP function to crack anti-hotlink images_PHP tutorial

Nowadays, many websites and forums use anti-hotlinking technology for pictures. Since there is anti-hotlinking, there must be a way to crack anti-hotlinking. Below, the editor will provide you with a way to crack anti-hotlinking pictures. php function. However, it only supports jpg and gif. If you want to support multiple image formats, you can make modifications.

$url=$_GET['url'];

$ext=pathinfo($url,PATHINFO_EXTENSION);

　if($ext!='jpg' && $ext!='gif'){ // Only supports jpg and gif

readfile('/upload/20081209130557536.gif');

exit;

　}

　$file=md5($url).'.'.$ext;

　if(file_exists($file)){

readfile($file);

exit;

　}else{

$data=file_get_contents($url);

　if(!$data){ // Failed to read

readfile('/upload/20081209130557536.gif');

exit;

　}

$handle=fopen($file,'wb');

fwrite($handle,$data);

fclose($handle);

echo $data;

　}

　?>