dynamic thumbnailing ?

**Terence** · Jul 17 '05, 04:46 AM

Re: dynamic thumbnailing ?

look for some php photo-album software and review their source-code. I
worked it out by reading the php manual (image functions).

here's a function I wrote some time ago (for a photo album program of my
own). It tries to use a function called imageCopyResamp led() but falls
back to imageCopyResize d(). The newer function imageCopyResamp led()
gives better quality but not all version of GD PHP modules have it.

You will have to modify this function as it was designed for my app. The
main param you are interested in is $intSize which represents the
maximum length of the longest side you want the thumbnail to be.

function createThumbnail ($id,$idSrcImg, $intSize) {

$uriSrcDir = "../albums".$id."/";
$uriSrcImg = $uriSrcDir.$idS rcImg;
$uriThmImg = $uriSrcDir."_th umbs/".$idSrcImg ;

$imgSrc=imagecr eatefromjpeg($u riSrcImg);

$intSrcH = ImageSY($imgSrc );
$intSrcW = ImageSX($imgSrc );
if($intSrcH == $intSrcW) {
$intHeight = $intWidth = $intSize;
}
elseif($intSrcH > $intSrcW) {
$intHeight = $intSize;
$intWidth = ceil(($intSrcW/$intSrcH) * $intSize);
}
else {
$intWidth = $intSize;
$intHeight = ceil(($intSrcH/$intSrcW) * $intSize);
}

$imgThm=imagecr eate($intWidth, $intHeight);

if(
!@imageCopyResa mpled(
$imgThm,
$imgSrc,
0,
0,
0,
0,
$intWidth,
$intHeight,
$intSrcW,
$intSrcH
)
) {
imageCopyResize d(
$imgThm,
$imgSrc,
0,
0,
0,
0,
$intWidth,
$intHeight,
$intSrcW,
$intSrcH
);
}

**Terence** · Jul 17 '05, 04:47 AM

Re: dynamic thumbnailing ?

re: revious example code:
forgot to include a closing brace in all the excitement...

**.: DeVa :.** · Jul 17 '05, 04:47 AM

Re: dynamic thumbnailing ?

Tnx. I will take a look at your code and refer to manual, im sure I'l manage
something..

Cheers....

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Terence natipkase:[color=blue]
> re: revious example code:
> forgot to include a closing brace in all the excitement...[/color]