PHP / Photo question

[xcandiottix]

I am working on a new project in which people can upload a photo to the site and the photo will be posted back up on a browse page.

My question is, if someone submits a 300 w x 500 h picture, can php figure that out so pictures are no taller then 400 and no wider then 400? So in this case, php would scale the 300x500 picture proportionately down to 400 tall. I don't want to set an absolute dimension to avoid pictures being distorted but at the same time down want 2000 x 3000 images popping up.

 

Thanks much,

k.candiotti

[ram4nd]

Well there is not a sticky for questions like this for nothing. You can do anything you want with php.

[xcandiottix]

lol

 

Oh. Should I put that between my php tags?

[ram4nd]

Oou want to know how to do it not is it possible? Google it or look into: http://php.net/manual/en/book.image.php

[oni-kun]

It's pointless to list code without you looking through the documentation or examples first on how to handle these things.

 

If you're wanting exact sizes, Calculate the aspect ratio:

$aspect = ($width / $height);
$towidth = (400 / $aspect);

 

Therefor, the new width will be exactly the same proportion to the height, but the height will always be 400. There'll be no distortion.

[xcandiottix]

 

$aspect = ($width / $height);
$towidth = (400 / $aspect);

 

Therefor, the new width will be exactly the same proportion to the height, but the height will always be 400. There'll be no distortion.

 

That's what I was getting at. I already saw everything on how to get pictures up via php, etc. But, I wasn't sure what math was involved. I read up on getimagesize() but wasn't sure what to do with that next.

 

Thanks!