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Some hosts disabled the ini setting allow_url_fopen. This also means that the ability to easily grab images by calling imagecreatefromjpeg($img) where $img is a url for an external image does not work.

This is a shame as this technique is pretty easy..

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$remote_img = 'http://www.somwhere.com/images/image.jpg';
$img = imagecreatefromjpeg($remote_img);
$path = 'images/';
imagejpeg($img, $path);

However I was tearing my hair out trying to get a product feed integration system to work on a host that has disabled the allow_url_fopen mechanism which meant the above wouldnt work.

Thankfully cURL was still working. So here is the function I made for grabbing and saving an image using cURL instead:

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//Alternative Image Saving Using cURL seeing as allow_url_fopen is disabled - bummer
function save_image($img,$fullpath){
  $ch = curl_init ($img);
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
  $rawdata=curl_exec($ch);
  curl_close ($ch);
  if(file_exists($fullpath)){
      unlink($fullpath);
  }
  $fp = fopen($fullpath,'x');
  fwrite($fp, $rawdata);
  fclose($fp);
}

Another Problem Solved :–)