hard code compresson level on resize?

[brian connolly]

Can some one advise me please? I'd like to hard code a compression level for a resize script using gd 201. Presently, a 1,800 kb file is typically reduced to 100 kb. Obviously, we're loosing a lot of detail.

Where? How? Thanks in advance.

function resizeimage($args) {
    $file = $args['file'];
    $max_width = $args['max_width'];
    $max_height = $args['max_height'];
    define(IMAGE_BASE, "../images");
    $image_path = IMAGE_BASE . "/$file";
    $img = null;
    $ext = strtolower(end(explode('.', $image_path)));
 
    if ($ext == 'jpg' || $ext == 'jpeg') {
      $img = @imagecreatefromjpeg($image_path);
        } else if ($ext == 'png') {
        $img = @imagecreatefrompng($image_path);
        } else if ($ext == 'gif') {
        $img = @imagecreatefromgif($image_path);
        }
        
        exec("cp " . $image_path . " " . $image_path . "_orig");
        echo "$image_path";     
         
    if($img) {
        $width = imagesx($img);
        $height = imagesy($img);
        $scale = min($max_width/$width, $max_height/$height);
        if($scale < 1) {
            $new_width = floor($scale*$width);
            $new_height = floor($scale*$height);
            $tmp_img = imagecreatetruecolor($new_width,$new_height);
            if(function_exists(imagecopyresampled)) {
                imagecopyresampled($tmp_img, $img, 0,0,0,0,$new_width,$new_height,$width,$height);
                } else {
                imagecopyresized($tmp_img, $img, 0,0,0,0,$new_width,$new_height,$width,$height);
                }
            imagedestroy($img);
            $img = $tmp_img;
            }
        }

[Joe[y]+]

are you talking about resize of thumbnails? because you can change the compression level in the admin panel for that.

[brian connolly]

Nope. Well, almost.

The above code is utok's hack/mod to resize and make wallpapers. It is a rework of the thumbnail code.

That said, I just cannot tell if it is also utilizing the thumbnails compression ratio. And if it is, where? Or, might there be default limitations set by my hosting company?

Thoughts?

[brian connolly]

imagejpeg($img, "../images/$file",100);