如何在文件夹中保存图像后立即获得通知？

I am doing an app in which have to get notification(local) when image is save d into a folder in server.Is it possible to start running script after getting notification?Can anyone please help me in this?

Thanks in advance.

if(move_uploaded_file($temporary, $upload_location)) 
{
   echo "<span style='font-size:0px'>image_saved</span>";
}

if you are using jquery then you can grab the response from php and show it on your app..

if(indexOf('image_saved') != -1){
    $('#messageDisplayer').html("The image has been saved successfully");
}
else{
    //do something
}