Thumbnails
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<?php
/*
####################################################################################
# Image Resizer Function - resize.func.php
# use resize($image,$thumb_path,$mode);
#
# vers 1.0 2004-02-18 written by Ingmar G�hr, ig@studiored.de, www.studio-red.de.
####################################################################################
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#####################################################################################
# Config:
#
*/
$w=100; // Width of Thumbnail
$h=100; // Height of Thumbnail
/*
#
#####################################################################################
*/
function percent($p, $w)
{
return (real)(100 * ($p / $w));
}
function unpercent($percent, $whole)
{
return (real)(($percent * $whole) / 100);
}
function resize($img,$dest_path,$mode){
// Initialization
SetType($mode, 'integer');
SetType($w, 'integer');
SetType($h, 'integer');
SetType($img, 'string' );
SetType($dest_path, 'string');
SetType($error, 'boolean');
global $w,$h;
// Make sure the file exists...
if (!file_exists($img))
{
return $error;
exit();
}
// If the user defined a type to use.
if (!isset($type))
{
$ext = explode('.', $img);
$ext = $ext[count($ext)-1];
switch(strtolower($ext))
{
case 'jpeg' :
$type = 'jpg';
break;
default :
$type = $ext;
break;
}
}
// Create the image...
switch (strtolower($type))
{
case 'jpg':
$tmpe = imagecreatefromjpeg($img);
break;
case 'gif':
$tmpe = @imagecreatefromgif($img);
break;
case 'png':
$tmpe = @imagecreatefrompng($img);
break;
default:
return $error;
exit();
break;
}
if ($tmpe)
{
// Resize it
$ow = imagesx ($tmpe); // Original image width
$oh = imagesy ($tmpe); // Original image height
if ($mode)
{
// Just smash it up to fit the dimensions
$nw = $w;
$nh = $h;
}
else
{
// Make it proportional.
if ($ow > $oh)
{
$nw = $w;
$nh = unpercent(percent($nw, $ow), $oh);
}
else if ($oh > $ow)
{
$nh = $h;
$nw = unpercent(percent($nh, $oh), $ow);
}
else
{
$nh = $h;
$oh = $w;
}
}
$out1 = imagecreate($nw, $nh);
imagecopyresized($out1, $tmpe, 0, 0, 0, 0, $nw, $nh, $ow, $oh);
imagedestroy($tmpe);
}
else
{
return $error;
exit;
}
if ($out1)
{
switch (strtolower($type))
{
case 'jpg':
ImageJPEG($out1,$dest_path."/tn_".$img,90);
break;
case 'gif':
ImageGIF($out1,$dest_path."/tn_".$img,90);
break;
case 'png':
ImagePNG($out1,$dest_path."/tn_".$img,90);
break;
}
imagedestroy($out1);
}
else
{
return $error;
}
}
?>
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Usage Example
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<?php
require("resize.func.php");
resize("test.jpg",getcwd(),0);
?>
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