Change the quality on png images #47
Description
If I upload an png image it becomes more then 4x the original size, you can't use the quality 0 - 100 on png images, but you can convert it using this code
// *** Scale quality from 0-100 to 0-9
$scaleQuality = round(($quality / 100) * 9);
// *** Invert quality setting as 0 is best, not 9
$invertScaleQuality = 9 - $scaleQuality;
the intire function:
switch (strtolower($pathinfo['extension'])) {
case 'gif':
$createHandler = 'imagecreatefromgif';
$outputHandler = 'imagegif';
$quality = null;
break;
case 'jpg':
case 'jpeg':
$createHandler = 'imagecreatefromjpeg';
$outputHandler = 'imagejpeg';
break;
case 'png':
$createHandler = 'imagecreatefrompng';
$outputHandler = 'imagepng';
// *** Scale quality from 0-100 to 0-9
$scaleQuality = round(($quality / 100) * 9);
// *** Invert quality setting as 0 is best, not 9
$invertScaleQuality = 9 - $scaleQuality;
$quality = $invertScaleQuality;
break;
default:
return false;
}