Why I get an error here???

[Anon]

<?php

$srcjpeg = ImageCreateFromJPEG("bigfile.jpg");

$srcwidth = ImageSX($srcjpeg);
$srcheight = ImageSY($srcjpeg);

$factor = 10;

$dstwidth = Round($srcwidth/$factor);
$dstheight = Round($srcheight/$factor);

$dstjpeg = ImageCreateTrueColor($dstwidth, $dstheight);
ImageCopyResampled($dstjpeg, $srcjpeg, 0, 0, 0, 0, $dstwidth, $dstheight, $srcwidth, $srcheight);

$quality=30;
ImageJpeg($dstjpeg, "maly.jpg", $quality);

ImageDestroy($srcjpeg);
ImageDestroy($dstjpeg);

?>

This code should SAVE A THUMBNAIL form JPG file but it returns error... how should the code be written to save a small file from big one???

[[deleted]]

...and what was the error??

[Anon]

Fatal error: Call to undefined function: imagecreatefromjpeg()

[icaro]

have your server gd library installed? have you search for a solution at php.net? there is many users notes at php.net/manual, as this:
"
After spending many, many hours trying to make this work, I realized that
it is not supported until version 3.0.16. So, if you're having problems,
check to see what version of PHP you have. You must also have version 1.8
or higher of gd, which means that you cannot have gif and jpeg support in
the same installation of PHP (easily).
"

take a look at http://www.php.net/manual/en/function.imagecreatefromjpeg.php

the error mensage that you report means you dont have gd library installed on your server.

[[deleted]]

"the error mensage that you report means you dont have gd library installed on your server"

Not quite, it means that PHP does not have GD support built into it. (even if the GD library was installed) This may require a recompile on unix, or a change in the php.ini on windows.

[icaro]

you are rigth - (english limitations) 🙂