2007. 03. 2, péntek keltezéssel 13.56-kor Punit Neb ezt írta:
> hello,
>
> I am a newbie trying to create on the fly thumbnail images on a debian sarge
> system with PHP Version 4.3.9-1.
>
> The following code is used
> <?
> function thumbnail_img($photo_img_name)
> {
> $percent = 0.5;
> list($width, $height) = getimagesize($photo_img_name);
> $newwidth = $width * $percent;
> $newheight = $height * $percent;
> $thumb = imagecreatetruecolor($newwidth, $newheight);
> $source = imagecreatefrompng($photo_img_name);
> imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width,
> $height);
> return imagepng($thumb);
> }
>
> print '<HTML>';
> print '<HEAD>';
> print '<META HTTP-EQUIV="Pragma" CONTENT="no-cache">';
> print '<TITLE>Image</TITLE>';
> print '</HEAD>';
> print '<body>';
> //image file name
> $photo_img_name='./photos/1.png';
> //display original image
> print '<IMG SRC='.$photo_img_name.' border=1>';
> //thumbnail image
> print '<IMG SRC='.thumbnail_img($photo_img_name).' border=1>';
> print '</body>';
> print '</html>';
> ?>
>
> The original image gets displayed correctly. But in place of the thumbnail
> image i get loads of junk text data. I guess the hmtl tags are all in order
> as the original image is perfectly displayed.
>
> What have i missed. Any comments, help etc will be appreciated.
either create a filename for the thumbnail and add it to the imagepng()
call as second parameter and reference it in the thumbnail <img> tag
or put the thumbnail creation in a separate file, say thumbnail.php
then the <img> tag should be like
echo "<img src=\"thumbnail.php?img=" . $photo_img_name . "\">";
and the thumbnail.php should send out some content-type header e.g.
"Content-Type: image/png" and then call your function like
echo thumbnail_img($_GET['img']);
hope that helps
Zoltán Németh
>
> regards
> Punit Neb
>
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