Upload Images From Form To A Folder

Greetings i am trying to upload a image file that i am getting from a form on my site. But the script is unable to upload the image. can same one help resolving issue.

 $fileName = $_FILES["file_fb_files"]["name"];
 $fileTmpLoc = $_FILES["file_fb_files"]["tmp_name"];
$fileType = $_FILES["file_fb_files"]["type"];
$fileSize = $_FILES["file_fb_files"]["size"];
$fileErrorMsg = $_FILES["file_fb_files"]["error"];
$kaboom = explode(".", $fname);
$fileExt = end($kaboom);
$db_file_name = $org_name.rand(1000,9999).".".$fileExt;
//$moveResult = move_uploaded_file($fileTmpLoc, "../user/$log_username/$db_file_name");
$moveResult = move_uploaded_file($name, "$db_file_name");
if ($moveResult != true) {
    $fileErrorMsg = print_r($fileErrorMsg , true);
    fwrite($file, "\n $db_file_name   $name file not added. >".$fileErrorMsg." \n");
    $fileErrorMsg = print_r($_FILES , true);
    fwrite($file, "\n file desc. >".$fileErrorMsg." \n");
    /*  file_put_contents( "/images/$attfilename", $attfilename);
    $postedele = print_r($_FILES , true);
    fwrite($file, "\n file not added \n $postedele\n"); */
}else{
     fwrite($file, "\n file added \n");
}

The output says file not added

But error code is 0