Thumbnails
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<?php
# +-------------------------------------------------+
# | J P G T h u m b n a i l G e n e r a t o r |
# +--------------------+----------------------------+
# | by Kadir Yazgan | ( kadiryazgan@ixir.com ) |
# +--------------------+----------------------------+
# v1.0
#
# Generates a proportional thumbnail image with a given width.
#
# This script only uses JPEG files. If required libraries are included GIF and PNG files can
# also be supported the same way.
#
#
# P a r a m e t e r s
# $imgdir: Directory where original images reside.
# $tndir: Directory where the thumbnails will be saved.
# $tn_w: Thumbnail width.
#-+ Include the GD library.
dl("php_gd.dll");
#-+ Define the original image
if (!isset($img))
{
$img = "default.jpg";
}
#-+ Directory where original images reside
$imgdir = "90/images/";
#-+ Directory where the thumbnails will be saved
$tndir = "90/images/tn/";
#-+ Thumbnail width
$tn_w = 100;
?>
<html>
<head>
<title> KY JPEG Thumbnail Generator </title>
</head>
<body>
<?php
#-+ Check if the file exists
if (!file_exists($imgdir.$img))
{
die ("Error: File not found...");
}
#-+ Check if the file extesion is .jpg
$ext = explode('.', $img);
$ext = $ext[count($ext)-1];
if (strtolower($ext) != "jpg")
{
die ("Error: File must be JPEG");
}
#-+ Read the source image
$src_img = ImageCreateFromJPEG($imgdir.$img);
#-+ Get image width and height
$org_h = imagesy($src_img);
$org_w = imagesx($src_img);
#-+ Calculate thumbnail height
$tn_h = floor($tn_w * $org_h / $org_w);
#-+ Initialize destination image
$dst_img = ImageCreate($tn_w,$tn_h);
#-+ Do it!
ImageCopyResized($dst_img, $src_img, 0, 0, 0, 0, $tn_w, $tn_h, $org_w, $org_h);
#-+ Save it!
ImageJPEG($dst_img, $tndir.$img);
#-+ Print report
echo "<h1>KY JPEG Thumbnail Generator</h1>";
echo "Original dimensions: $org_w x $org_h<br>n";
echo "Thumbnail dimensions: $tn_w x $tn_h<br>n";
printf ("<a href="%s"><img src="%s" alt="Click to view the original image"></a>", $imgdir.$img, $tndir.$img);
?>
</body>
</html>
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