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Posted by Krustov on 07/27/06 12:33
<comp.lang.php>
<bizt>
<26 Jul 2006 13:00:23 -0700>
<1153944023.139985.255030@h48g2000cwc.googlegroups.com>
> I have a PHP program on my webspace that I use to upload images. As the
> images are about 500KB each, I would like to create a preview thumbnail
> image with smaller image dimensions than the original.
>
$whatsupdoc="thumbs/image5.jpg";
$pass=1; $filename=$whatsupdoc;
if (!file_exists($filename)) {$pass=0;}
if ($pass==0)
{
$biggy="images/image5.jpg";
$whatsupdoc="thumbs/image5.jpg";
include('create_thumb.php');
}
$size=GetImageSize($whatsupdoc);
<img src=$whatsupdoc width=$size[0] height=$size[1] border=0>
The above code will only create a thumbnail if it doesnt already exist .
If the thumbnail does exist - then it will just display it .
create_thumb.php
<?php
$img_name=$biggy;
$new_name=$whatsupdoc;
$max_width=120;
$max_height=70;
$size=GetImageSize($img_name);
$width_ratio=($size[0] / $max_width);
$height_ratio=($size[1] / $max_height);
if($width_ratio >=$height_ratio)
{
$ratio = $width_ratio;
}
else
{
$ratio = $height_ratio;
}
$new_width=($size[0] / $ratio);
$new_height=($size[1] / $ratio);
$src_img=ImageCreateFromJPEG($img_name);
$thumb=ImageCreateTrueColor($new_width,$new_height);
ImageCopyResampled($thumb,$src_img,0,0,0,0,($new_width-1),($new_height-
1),$size[0],$size[1]);
ImageJPEG($thumb,$new_name);
ImageDestroy($src_img);
ImageDestroy($thumb);
?>
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