Here’s a little script how to create thumbnail with PHP and GD library and still keeping aspect ratio. You only need to specify new image’s maximum width and height.
By default, it will create a maximum 110×110 pixel, both width or height, depend on which is longer.
Function to create thumbnail from an image
Example: makeThumb('img/image.jpg','img/thumbnail/','gambar_kecil.jpg','',150,150);
*/
function makeThumb($file,$thumb_dir,$new_name="",$resize="10",$new_width="110",$new_height="110"){
// get file info
$size = getimagesize($file);
$width = $size[0];
$height = $size[1];
if(!$new_name){
$filename = basename($file);
}
else{
$filename = $new_name;
}
// new size
if($resize){
$new_w = ($width*($resize/100));
$new_h = ($height*($resize/100));
}
else{
// tentuin new width and height
$new_w = $new_width;
$new_h = $new_height;
if($width>=$height){
$stat=”hor”;
}
elseif($width<=$height){
$stat="ver";
}
if($stat=="hor"){
$new_h=$height*$new_w/$width;
}
elseif($stat=="ver"){
$new_w=$width*$new_h/$height;
}
}
// ayo menggambar
$src_img = imagecreatefromjpeg($file);
$dst_img = imagecreatetruecolor($new_w,$new_h);
imagecopyresampled($dst_img, $src_img, 0, 0, 0, 0, $new_w, $new_h, $width, $height);
imagejpeg($dst_img,$thumb_dir.$filename,100);
// bersihin sampah memori
imagedestroy($src_img);
imagedestroy($dst_img);
}
?>
Don’t forget to create [b]thumbnail[/b] directory first. Have phun!
