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Posted by Shelly on 10/30/06 23:27
<jason.tadeo@gmail.com> wrote in message
news:1162246760.533931.252710@m7g2000cwm.googlegroups.com...
>I was wondering if anyone does any uploading picture scripts or how to
> do it where i could upload a picture and use php to change the picture
> size to what i want it to be. Anyone know where i could learn how to do
> this or have any script examples? i would really appreciate it alot.
>
> thanks for you time
>
> jason
>
I developed a little script that I used only for jpegs so far. I haven't
tested it with other image types. Here it is:
function thumbnail($img, $w_d, $h_d) {
// $img is the image
// $w_d is the desired width in pixels
// $h_d is the desired height in pixels
//
// function to get the width and height to display q thumbnail
// Pass in the image location, the deisred width and the desired height
// Ouput is an array of height and width to display that can be
// exploded with the list commant
list($w, $h, $type, $attr) = getimagesize($img);
$calc_width = $h_d * $w / $h;
$calc_height = $w_d * $h / $w;
if ($calc_width <= $w_d) {
$disp_width = $calc_width;
$disp_height = $h_d;
} else {
$disp_width = $w_d;
$disp_height = $calc_height;
}
return array($disp_width, $disp_height);
}
I call it with:
list($disp_width, $disp_height) = thumbnail($the_picture_location, 500,
500);
and in the html area I have:
<img src="the-picture-location" width="<?php echo $disp_height;?>"
height="<?php echo $disp_height;?>"
border="0" alt="something here" align="bottom" />
Hope that helps.
Shelly
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