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Improve thumbnail creator to work with more formats?


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I have a thumbnail creator that someone else had developed for me. It works for jpg images but my site also has png, gif bmps and probably more in the future. But the thumbnail creator can`t do thumbnails for these non-jpg images. Here`s what the thumbnail creator is:

 

<?php
// File and new size
//$imgfile = 'thumb.jpg';
//$percent = 0.2;
header('Content-type: image/jpeg');
$imgfile = $_GET['img'];
list($width, $height) = getimagesize($imgfile);
//echo $width, $height;
$newwidth = 100;
$factor = $newwidth / $width;
//echo $factor;
$newheight = $height * $factor;

$thumb = ImageCreateTrueColor($newwidth,$newheight);
$source = imagecreatefromjpeg($imgfile);

imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

imagejpeg($thumb);
?>

 

Any advice?

If you look around this forum I've posted a jpg/gif/png image unloader resizer a million times. 

 

FYI bitmap is not an accepted web graphics compression mode.  So you either have to convert bitmaps on uploads or do some crazy stuff with them.

 

Tifs have limited support in php, but stick to the core 3.

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