Callback Routines
Saving Images to Your Server
You will need to create your own callback routine to save the optimized images to your server.
Specify the URL of your callback routine using API parameter uplink_url.
(sample callback routines are available here)
Example
The following code will open fred.jpg in webresizer for editing with the link 'Add to My Gallery' showing. Once the user has finished editing the image, control is passed to your callback routine 'transfer.php'. Your callback routine will need to perform validations and save the optimized image to your server.
<script type="text/javascript">
var webresizerAPI = new Object;
webresizerAPI.parameters = {
apikey : 'your API Key here',
image_url : 'http://www.example.com/fred.jpg',
is_sample_image : 'no',
uplink_text : 'Add to My Gallery',
uplink_url : 'http://www.example.com/gallery/transfer.php'
};
</script>
<script type="text/javascript"
src="http://api.webresizer.com/ext1.0/js/webresizer_api.js"></script>
GET parameters
The following information is available to your callback routine as GET parameters appended to the uplink_url.
| url | the location of the optimized image | |
| valid values: | URL | |
| filename | the name of the optimized image | |
| valid values: | filename | |
| filesize | the size of the optimized image in kilobytes | |
| valid values: | numeric | |
| filetype | the type of the optimized image | |
| valid values: | jpg, gif, png | |
| height | the height in pixels of the optimized image | |
| valid values: | numeric | |
| width | the width in pixels of the optimized image | |
| valid values: | numeric | |
For example, before saving the image to your servers you can check that the image size meets your requirements by checking the 'filesize' value returned. If the image is not the correct size, your callback routine can simply re-open the image in Web Resizer and display a suitable message to the user.
More Advanced Features
Session Variables - using session variables with the API