creating thumbnails with PHP

[Anon]

We have a database that's holding full size images. We want to take the full size images and create thumbnails, and store them in the database. Then we want to display the thumbnails in php, and html pages. We need help with creating and storing the thumbnails. Thanks

[crimaniak]

first: get out picture from database.
second: use class like this (only jpeg supported here):

kimage.class.php

<?

class kimage
{

var $thumbHeight=60;

function kimage($args)
{
static $types=array(1=>'gif',2=>'jpg',3=>'png',4=>'swf',5=>'psd',6=>'bmp',7=>'tiff',8=>'tiff-m',9=>'jpc',10=>'jp2',11=>'jpx');

$this->args=$args;
$this->fullPath=$args['path'].'/'.$args['filename'];
$this->thumbPath=$args['thumbs'].'/'.$args['filename'];
if(($info=getimagesize($this->diskPath($this->fullPath)))===NULL)
	trigger_error("Error opening image $this->fullPath",E_USER_ERROR);
$this->width=$info[0];
$this->height=$info[1];
$this->type=$types[$info[2]];
$this->tagParms=$info[3];
if(isset($args['thumbHeight']))
	$this->thumbHeight=$args['thumbHeight'];
if(isset($args['thumbWidth']))
	$this->thumbWidth=$args['thumbWidth'];
else	$this->thumbWidth=(int)($this->thumbHeight*$this->width/$this->height+0.5);

}

function diskPath($path)
{
return $this->args['root'].$path;
}

function image()
{
return "<IMG SRC=\"$this->fullPath\" $this->tagParms".(isset($this->args['parms'])?' '.$this->args['parms']:'').'>';
}

function thumbnailExists()
{
$imageFile=$this->diskPath($this->fullPath);
$thumbFile=$this->diskPath($this->thumbPath);

return file_exists($thumbFile) && filemtime($thumbFile)>=filemtime($imageFile);

}

function createThumbnail()
{
static $fun=array();
$imageFile=$this->diskPath($this->fullPath);
$thumbFile=$this->diskPath($this->thumbPath);

if(!$image=@imagecreatefromjpeg($imageFile))
	trigger_error("Can't load picture $this->fullPath",E_USER_ERROR);
$thumbnail=ImageCreateTrueColor($this->thumbWidth, $this->thumbHeight);
imageinterlace($thumbnail,1);
imagecopyresampled($thumbnail, $image, 0, 0, 0, 0, $this->thumbWidth, $this->thumbHeight, $this->width, $this->height);
imagejpeg($thumbnail,$thumbFile);

}

function thumbnail()
{
if(!$this->thumbnailExists())
{
$this->createThumbnail();
}
return "<IMG SRC=\"$this->thumbPath\" WIDTH=\"$this->thumbWidth\" HEIGHT=\"$this->thumbHeight\"".(isset($this->args['parms'])?' '.$this->args['parms']:'').'>';
}

};

?>

[yurko]

Cool class, but if you are not addicted to oop, you can see my code here
http://horobey.jlxlinux.com/
[demos]>[php/mysql]>[imgresizer]
It is not exactly what you asked for.
This script allows you to upload and store on server an image and resized copy of image. I think you can borrow some routines from there.