PHP:Upload pictures to SAE (based on http://blog.4321.la/articles/2012/02/12/use-sae-to-setup-uploading-system/ )

upload.php

<?php

define('PASSWORD','putyourpasswordhere');
define('DOMAIN','h');

function extend($file_name) {
    $extend = pathinfo($file_name);
    $extend = strtolower($extend["extension"]);
    return $extend;
}

if ($_POST["pw"] !== PASSWORD) {
    echo "fuck!";
} else {

    $target_path = SAE_TMP_PATH;
    $basename = basename( $_FILES['file']['name']);
    $uuid = md5(uniqid(rand(), true));
    $target_path = $target_path.$uuid;

    if (move_uploaded_file($_FILES['file']['tmp_name'], $target_path) == false) {
        echo "There was an error uploading the file, please try again!\n";
    }

/*$file_contents = file_get_contents($target_path);
$s = new SaeStorage();
$filename=$uuid.$basename;
$s->write($domain, $filename ,$file_contents);
$url=$s->getUrl($domain, $filename);*/

    $extends = array("jpg","jpeg","gif","png","bmp");
    $extend = extend($basename);

    if (in_array($extend,$extends)) {
        $s = new SaeStorage();
        echo $s->upload(DOMAIN, $uuid.".".$extend,$target_path)."\n";
        //echo $url;
    } else {
        echo "Invalid file!\n";
    }
}

?>