OMG..
This is the second question tonight I answer that I was just working on
today :-p
hah..
Ok.. simple.. here's my code I used today for www.operation-scifi.com/lobby
Thing is.. It's about as understandable to other's as hieroglyphics..
Therefore.. a simple solution..
do this:
<?
header("Content-type: image/jpeg");
$img=imagecreatefromxxx("../dir/img.ext"); //where xxx = jpeg | png | gif
etc..
$img2=imagecreate(150,100);
$imgsize=getimagesize("../dir/img.ext");
imagecopyresized($img2,$img,0,0,0,0,150,100,$size[0],$size[1]);
imagexxx($img2);
?>
Substitute the filepath etc.. and also the 150/100 dimension sizes..
xxx denotes the image type which depending on your GD version .. jpeg has
always been supported.. GIF has been removed as of 1.6 I think due to the
LZW compression patent by Unisys.. and now they have PNG which my site uses
due to it's much better file format and flexibility..
Also BTW.. this script is designed to be a seperate file.. ie image.php
perhaps even do what I did and make the filename actually a $_GET param..
As in.. you call: ./image.php?im=whatever.jpg
and it generates a thumbnailed version..
if your using JPEG format you can also use this param in the
imagejpeg($img2); function:
imagejpeg($img2,"",80); whereby the output quality is no 80%.. that means
lower qual thumbnail..
There is a lot of fun things that can be done just with the core graphics
module of PHP without GD.
but GD is soo great it can do much more exciting things..
Like for instance today I wanted to resize these big pics.. That's all
good.. But they are somewhat pixellised from the large downshrink. Now.. the
function imagecopyresample() would be great..
but's a GD2+ thing.. I don't use GD plus yet.. [downloading the bin as I
write this] but that's just one great func. taht allows for resize and
interpolation of near pixels (ie smoothing)..
w00tage eh??
Anyways.. enough said. rambling on now.. HIH
/***** IMAGE HANDLING ROUTINE *****/
$errmsg=Array();
if(strlen($_GET["d"])<1) {
$errmsg[]="Invalid GET params sent:";
$errmsg[]="Must send valid data_id to script!";
$fwidth=(strlen($errmsg[count($errmsg)-1])>$fwidth?strlen($errmsg[count($err
msg)-1]):$fwidth);
} else {
$sql=mysql_query("SELECT * FROM opscifi_news_data WHERE data_id =
".$_GET["d"],$DB);
if(mysql_num_rows($sql)>0 AND $ditem=@mysql_fetch_array($sql)) {
if(!file_exists("./news/n".$ditem["news_id"]."d".$ditem["data_id"].".".subst
r($ditem["filename"],strpos($ditem["filename"],".",0)+1,strlen($ditem["filen
ame"])-(strpos(fname,".",0)+1)))) {
$errmsg[]="Invalid file request:";
$errmsg[]="File
./news/n".$ditem["news_id"]."d".$ditem["data_id"].".".substr($ditem["filenam
e"],strpos($ditem["filename"],".",0)+1,strlen($ditem["filename"])-(strpos(fn
ame,".",0)+1))." does not exist!";
$fwidth=(strlen($errmsg[count($errmsg)-1])>$fwidth?strlen($errmsg[count($err
msg)-1]):$fwidth);
} elseif(!preg_match("/(jpg|jpeg|jpe)/i",$ditem["filename"])) {
$errmsg[]="Invalid image type request:";
$errmsg[]="Script can only process image/jpeg files!";
$fwidth=(strlen($errmsg[count($errmsg)-1])>$fwidth?strlen($errmsg[count($err
msg)-1]):$fwidth);
} else {
// Spit out required [standard] MIME-type header
header("Content-type: image/jpeg");
// Fetch the "original" friendly filename
$row=mysql_fetch_array(mysql_query("SELECT filename FROM
opscifi_news_data WHERE data_id = ".$_GET["d"],$DB));
$ditem["filename"]=$row[0];
header("Content-Disposition: image; filename=".$ditem["filename"]);
// Update request field in images "data" element
if(!isset($_GET["t"])) mysql_query("UPDATE opscifi_news_data SET
requests = requests + 1 WHERE data_id = ".$_GET["d"],$DB);
// Load nxdx.ext into
$f="./news/n".$ditem["news_id"]."d".$ditem["data_id"].".".substr($ditem["fil
ename"],strpos($ditem["filename"],".",0)+1,strlen($ditem["filename"])-(strpo
s(fname,".",0)+1));
$img=imagecreatefromjpeg($f);
$size=getimagesize($f);
if(isset($_GET["h"]) or isset($_GET["w"])) {
$outimg=imagecreate((isset($_GET["w"])?$_GET["w"]:$size[0]),(isset($_GET["h"
])?$_GET["h"]:$size[1]));
imagecopyresized($outimg, $img,
0,0,0,0,(isset($_GET["w"])?$_GET["w"]:$size[0]),(isset($_GET["h"])?$_GET["h"
]:$size[1]),$size[0],$size[1]);
} else {
$outimg=$img;
}
imageinterlace($outimg,1);
imagejpeg($outimg,"",(isset($_GET["q"])?$_GET["q"]:100));
}
} else {
$errmsg[]="News Data Item Not in 'news_data' table!";
$fwidth=(strlen($errmsg[count($errmsg)-1])>$fwidth?strlen($errmsg[count($err
msg)-1]):$fwidth);
}
}
if(strlen($errmsg)>0) {
// Spit out required [standard] MIME-type header
header("Content-type: image/jpeg");
$f_size=2;
$img=imagecreate(imagefontwidth($f_size)*$fwidth+14,(imagefontheight($f_size
)+2)*count($errmsg)+5);
imagefill($img, 0, 0, imagecolorallocate($img, 220,220,220));
foreach($errmsg as $pos=>$str) imagestring($img, $f_size, 7,
3+($pos*(imagefontheight($f_size)+2)), $str, imagecolorallocate($img, 255,
0, 0));
imageinterlace($img,1);
imagejpeg($img);
exit();
} else {
exit();
}
------oOo---------------oOo------
Julien Bonastre [The_RadiX]
The-Spectrum Network CEO
[EMAIL PROTECTED]
www.the-spectrum.org
------oOo---------------oOo------
----- Original Message -----
From: "Kjell Hansen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Monday, September 23, 2002 1:09 AM
Subject: [PHP] Create Thumbnails from image
> Hi,
> I'm using a Win2k with php4.1 and I'd like to make some thumbnails from
> pictures on my disk.
> I've gotten the impression that it's possible, but I havent' found out
> just how.
>
> I've stumbled across the ImageCopyResized function but it requires a
> imagehandle(?) to the file copied from. How do I get that? Is it the
> right way to do this?
> I guess I could use some picture manipulating program to do this, but
> doing it the PHP way is nicer :)
>
> TIA
> Kjell
>
>
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>
>
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