need help with mkdir permissions

[blue-genie]

I'm doing a flash app where i save webcam images to a folder on the server.

I'm able to make this work when running of xampp on my machine, I create the required folder structure and I'm able to read from that folder and display the images, however once i move the stuff onto a live server, it fails to create the folders and it seems to be a permission problem. Is it server specific?

 

i've tried chmod etc but I don't think i'm doing it right. any help, pointers for a non php developer would be most helpful.

 

here's my code snippet

 

<?php

//This project is done by vamapaull: http://blog.vamapaull.com/

//The php code is done with some help from Mihai Bojin: http://www.mihaibojin.com/

 

$uid = $_GET[uid];

$structure = './images/' .  date("Ymd") .'/' . $uid. '/';

 

// To create the nested structure, the $recursive parameter

// to mkdir() must be specified.

 

 

if(is_dir($structure))

{

echo "Exists!";

}

else

{

echo "Doesn't exist" ;

 

if (!mkdir($structure,'0777', true) ) {

    die('Failed to create folders...');

}

}

 

 

if(isset($GLOBALS["HTTP_RAW_POST_DATA"])){

$jpg = $GLOBALS["HTTP_RAW_POST_DATA"];

$img = $_GET["img"];

$filename = 'images/' . date("Ymd"). "/" .$uid. "/img_". mktime(). ".jpg";

file_put_contents($filename, $jpg);

} else{

echo "Encoded JPEG information not received.";

}

?>