creating png files

Question

I made a function to handle jpg and png files, but i get error when trying to upload a png file.

this is the function:

function createImg ($type, $src, $         


        

Answer 1

What value are you using for the quality setting? imagepng() uses values 0-9, whereas imagejpeg() uses 0-100.

Answer 2

Johnny Craig's answer is correct except one thing, it has inverse relationship. 9 - is the most possible compression, and 0 - no compression, so the most possible quality.

if ($type == 'png') {
    $quality = round((100 - $quality) * 0.09);
}

Answer 3

The problem is because imagejpeg quality can be up to 100, whereas imagepng maximum quality is 9. try this

 else if ($type == "png") {
//imagepng() creates a PNG file from the given image. 
$q=9/100;
$quality*=$q;
imagepng($newImage,$dst,$quality);      
}