[problem]
You need to make a thumbnail of an image, on the fly.
[/problem]
[solution]
Here is a short PHP script to make a thumbnail out of the image.
It takes two arguments, one for the image’s file name and one for the compression rate.
[/solution]
[example]
displayThumb.php
<?php
$filename = $_GET['filename'];
$compression = $_GET['compression'];
Header("Content-type: image/png");
$im = imagecreatefrompng("$filename");
$currWidth=ImageSX($im);
$currHeight=ImageSY($im);
$newWidth=$currWidth * ($compression / 100);
$newHeight=$currHeight * ($compression / 100);
$im1 = imagecreatetruecolor($newWidth,$newHeight);
$bgc = imagecolorallocate ($im1,255,255,255);
imagefilledrectangle ($im1, 0, 0, $newWidth, $newHeight, $bgc);
imagecopyresampled ($im1, $im, 0, 0, 0, 0,
$newWidth, $newHeight, $currWidth, $currHeight);
imagepng($im1);
imagedestroy($im1);
?>
[/example]
[reference]
[tags]Image manipulation, thumbnail creation on the fly, PHP Coding School[/tags]
[/reference]
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