per the documentation on php.net for 'move_uploaded_files', the function does NOT produce an error/warning if the first parameter ($filename) is invalid. so if you do something like this:
if(!move_uploaded_files($_FILES['imgUploaded']['tmp_name'],"images/".$name.".".$img_ext)){
exit("move_uploaded_files did not succeed!");
}else{
exit("move uploaded_files worked!");
}
Then you can at least see if the function is failing. If it is failing, and you have PHP set to show warnings (which it IS by default), you will get a warning with more details about why it failed if the second parameter ($destination) is invalid. Otherwise, if it fails but has no warning output then you know the uploaded file is invalid (which is usually the result of trying to write to a directory with permissions set to PHP doesn't have write access)