Uploading a picture. Any way to validate width before uploading?

[suttercain]

Hi everyone,

 

I am using one of the tutorials to upload images. Because the images go into a template they must be a width of 300 pixels to look good. Is there anyway to validate the width of a .jpg, .png and .gif?

 

I am using this tutorial:

http://www.phpfreaks.com/quickcode/Upload-Multiple-Files-Simple-Code/582.php

 

Thanks for the help!

 

SC

[trq]

Is there anyway to validate the width of a .jpg, .png and .gif?

 

Not before uploading.

[akitchin]

as for after uploading (but before you store it with PHP), you can use getimagesize().

[suttercain]

Thanks guys,

 

Is there a way, that I can write a function using getimagesize(), and have a file function delete any image that isn't over 300 width?

 

So a user uploads an image, a function sees that image is not 300px width and deletes the picture right away?

 

That way when they go to use it in the template it's not there. I have a warning before they upload it must be 300 width... but people.... well you know.

 

 

Thanks guys.

 

SC

[AndyB]

manual:

 

getimagesize() -> http://ca.php.net/manual/en/function.getimagesize.php

 

unlink (delete function) -> http://ca.php.net/manual/en/function.unlink.php

 

If you check the size of the uploaded image before moving it, it'll stay in the tmp folder and be deleted automatically when the browser session ends.