If you have a multi authors blog you may allow upload only for specifics authors and disallow for other, to do this you just need to paste the following code to your wordpress’s theme function.php file, editing the $user array. Continue reading →

add_filter('upload_mimes','wpc_permetti_upload');
function wpc_permetti_upload($mimes) {
    global $current_user;
    get_currentuserinfo();
    // change users in list
    $users = array(
                              "pigi",
                              "gino",
                              "giovanni",
                              "antonio"
                            );
    if (!in_array($current_user->user_login, $users)) {
	$mimes = array(
	                'jpg|jpeg|jpe' => 'image/jpeg',
	                'gif' => 'image/gif',
	);
	}
	return $mimes;
}