GD lib problems

[tommmmm]

I'm using the following piece of code to create thumbnmails, it woprks fine apart from the quality of the thumbnails created. Is there an error or is it a server side setting that needs tweaking?? I'm a complete newb when it comes to GD lib.

function thumbjpg($image_path, $thumb_path, $image_name, $thumb_width)
{
    $src_img = imagecreatefromjpeg("$image_path/$image_name");
    $origw=imagesx($src_img);
    $origh=imagesy($src_img);
    $new_w = $thumb_width;
    $diff=$origw/$new_w;
    $new_h=$new_w;
    $dst_img = imagecreate($new_w,$new_h);
    imagecopyresized($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h, imagesx($src_img), imagesy($src_img));

imagejpeg($dst_img, "$thumb_path/$image_name");
return true;
}


function thumbgif($image_path, $thumb_path, $image_name, $thumb_width)
{
    $src_img = imagecreatefromgif("$image_path/$image_name");
    $origw=imagesx($src_img);
    $origh=imagesy($src_img);
    $new_w = $thumb_width;
    $diff=$origw/$new_w;
    $new_h=$new_w;
    $dst_img = imagecreate($new_w,$new_h);
    imagecopyresized($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h, imagesx($src_img), imagesy($src_img));

imagejpeg($dst_img, "$thumb_path/$image_name");
return true;
}

http://www.iheartuni.com/uploads/funny_pictures/thumbs/20061123863284.jpg
was made from
http://www.iheartuni.com/uploads/funny_pictures/pictures/20061123863284.jpg

[Installer]

Use imagecreatetruecolor() instead of imagecreate().

[bradgrafelman]

Also, note from the manual entry for [man]imagejpeg/man:

bool imagejpeg ( resource image [, string filename [, int quality]] )

...

quality is optional, and ranges from 0 (worst quality, smaller file) to 100 (best quality, biggest file). The default is the default IJG quality value (about 75).

Try forcing quality to 100%.

[Installer]

Keep in mind ( 🙂 ) that raising the quality to 100% will give you a file over 4 times as large, with very little discernible increase in quality.

[bradgrafelman]

Hmm... guess I never did play with those values and watch the filesize. Good to know!