PHP image filtering

[lenoir]

Hi,

I want to process images being uploaded to PW by a client. Basically, making a sepia version of the images (with manual settings). I'm wondering: where's the best place/moment to implement this kind of process? Do you have any suggestions?

FYI: I'm also using the cropping image tool by Antti Peisa.

Here's my code. It loads the image, filters it and then overwrites it.

$image = imagecreatefromjpeg('myimage.jpg'); // the original file
imagefilter($image, IMG_FILTER_GRAYSCALE);
imagefilter($image, IMG_FILTER_COLORIZE, 19, 18, 0);
imagefilter($image, IMG_FILTER_BRIGHTNESS, -10);
imagefilter($image, IMG_FILTER_CONTRAST, -2);
imagejpeg($image, 'myimage.jpg'); // overwrites the original file.

Thanks!

[MatthewSchenker]

Greetings lenoir,

If you run it that way, you replace the image. That's fine, but you could also use a CSS filter to change it to sepia when the image is rendered.

There are still some cross-browser issues, but check here for info -> http://blog.teamtreehouse.com/css-filter-effects

There is also a nice JQuery method for doing this -> http://css.dzone.com/articles/html5-image-effects-sepia

With either of these methods, you could easily run it right inside your template.

Thanks,

Matthew

[lenoir]

Hi Matthew,

Thanks for your reply. That's what i looked at in the first place, but with PHP i'm sure it'll be rendered correctly in all browsers, with or without js activated.

I think it'd be more efficient dropping these 4-5 lines of code upon saving or uploading the image…

David