Save an image from URL using php

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Iam Explain about how to save an image form External URL,It is very simple using following code

<?php
  $imageurl ='http://sri-knowledgecorner.rhcloud.com/images/blogicon.jpeg';

  $image=file_get_contents($imageurl);
 
  $imagename = basename($imageurl);//image name
 
  define('DIRECTORY', 'images/'); //save image in images folder

  file_put_contents(DIRECTORY.$imagenam, $image);
?>

Make sure that you have write permission to the directory where you want to store the image.