PHP function _php Tutorial to crack the anti-theft chain picture

Now many of the website and forum pictures are using anti-theft chain technology, since there are anti-theft chain, then there must be a way to crack the anti-theft chain, the following small series to provide you with a crack anti-theft chain image PHP function. But only JPG and GIF support, if you want to support a variety of graphic format, you can make the next change.

$url =$_get[' url '];

$ext =pathinfo ($url, pathinfo_extension);

if ($ext! = ' jpg ' && $ext! = ' gif ') {//only JPG and GIF supported

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

Exit

}

$file =md5 ($url). $ext;

if (file_exists ($file)) {

ReadFile ($file);

Exit

}else{

$data =file_get_contents ($url);

if (! $data) {//Read failed

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

Exit

}

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

Fwrite ($handle, $data);

Fclose ($handle);

Echo $data;

}

?>

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