php - Upload image from url

php - Upload image from url

<?
error_reporting(E_ALL);

// define the filename extensions
define('ALLOWED_FILENAMES', 'jpg|jpeg|gif|png'); 
// define a directory 
define('IMAGE_DIR', 'image'); 

// check against a regexp for an actual http url and for a valid filename, 
$url = "http://www.philwebcreative.com/philweb_logo.jpg";
if(!preg_match('#^http://.*([^/]+\.('.ALLOWED_FILENAMES.'))$#', $url, $m)) { 
  die('Invalid url given'); 
} 

// try getting the image 
if(!$img = file_get_contents($url)) { 
  die('Getting that file failed');
}

// try writing the file with the original filename 
if(!$f = fopen(IMAGE_DIR.'/'.$m[1], 'w')) { 
  die('Opening file for writing failed'); 
} 

if (fwrite($f, $img) === FALSE) { 
  die('Could not write to the file'); 
} 

fclose($f);  
?>