使用function.file-put-contents拒绝警告权限

Question

I'm using this code to download a dynamic image file which is already on my server

$url = 'example.com/test/image.php';
$img = 'cert.png';
file_put_contents($img,'file_get_contents($url));

allow_url_fopen is already enabled on the server. but i'm still getting the following error

Warning: file_put_contents(cert.png) [function.file-put-contents]: failed 
to open stream: Permission denied in D:/... on line 42

I saw the same error on another website http://www.rsi-relief.com/rsi-links/ergonomics-information/ergoweb/

I'm new to PHP so i'm a bit confused here. Pls help

Answer 1

This has nothing to do with wrong php code i guess, but file system permissions on your server /host. If you have access via SSH or FTP you can try to modify the cmod settings of your folder / file.

Update

Your code is wrong, try this

// this is the path where you need write access on your server
$imgDestinationPath = '/you/need/a/physical/serverpath/here/cert.png';
$url = 'http://example.com/test/image.php';
$content = file_get_contents($url);
file_put_contents($imgDestinationPath, $content);