Magento : add custom php code into product description

Question

I wrote a php script that resizes jpeg images provided by external URL. The script works well on my server with a test page, but it seems that Magento doesn't allow custom php code into product description.

Is there any way to insert that piece of code into description ?

<?php 
header('Content-Type: text/html; charset=utf-8');

$url_A = 'http:/...';
$url_B = 'http:/...';

$resizer_URL = 'http:/...';

echo '<a href="'.$url_A.'" target="_blank"><img class="scanA" src="'.$resizer_URL.'?url='.$url_A.'"/></a>
      <a href="'.$url_B.'" target="_blank"><img class="scanB" src="'.$resizer_URL.'?url='.$url_B.'"/></a>';

?>

The script code is:

<?php
// The file
$filename = $_GET['url'];

// Content type
header('Content-type: image/jpeg');

// Get new dimensions
list($width, $height) = getimagesize($filename);

$ratio = $height / $width;

$new_width = 580; 
$new_height = $new_width * $ratio;

// Resample
$image_p = imagecreatetruecolor($new_width, $new_height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

// Output
imagejpeg($image_p, null, 75);

//
imagedestroy($image_p);
imagedestroy($image);
?>

Thanks.

Answer 1

You could just edit your template if you wish to have this display for all products, if not you may have to filter what type of product, or if a custom attribute is set before running the code.

The file to edit would be (based on Magento 1.9 RWD theme)

/app/design/frontend/rwd/default/template/catalog/product/view.phtml

Obviously you have to change the path to your theme.

Then you could do something like so:

$url_A = $_product->getData('extra_url1');
$url_B = $_product->getData('extra_url2');

if($url_A != '' && $url_B != '') {
     ... do your code ...
}