problem with imagejpeg

[Seamless]

Hi,

I have written a page to parse the uploading of images. I usually test it with the default images you get with windows XP (you the sunset one etc..) and everything worked fine... It uploads the image resizes the original outouts it and then creates a thumbnail and again outputs it.

Until...

I tried uploading a larger jpeg (3.1Mb) it uploads it to the php tmp directory and it gets as far as
[code]
imagejpeg($image_p,$target,$jpegqual);
[/code]

and gives up.

here's a snippet from the page, like i said everything works fine until the imagejpeg part.

[code]
if($filetype == "image/pjpeg" or $filetype == "image/jpeg"){
list($orig_width, $orig_height) = getimagesize($tmp_name);
$ext = ".jpg";
$target = $uploaddir.$new_name.$ext;
$target_small = $uploaddir."thumbs/".$new_name.$ext;
$width = $orig_width;
$height = $orig_height;
$width_small = $orig_width;
$height_small = $orig_height;
// RESIZE LARGE IMAGE
if($height > $max_height){
  $width = ($max_height / $height) * $width;
  $height = $max_height;
}
if($width > $max_width){
  $height = ($max_width / $width) * $height;
  $width = $max_width;
}
$image_p = imagecreatetruecolor($width, $height)or die("Cannot Initialize new GD image stream");
$image = imagecreatefromjpeg($tmp_name)or die("Cannot Initialize new GD image stream2");
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $orig_width, $orig_height);
imagejpeg($image_p,$target,$jpegqual);
[/code]

i've checked the syntax and i don't think its that

does anyone have any ideas??

Thanks in advance

Seamless.

[shazam]

Here is one thought...

Double check your php.ini to ensure the 'post_max_size' directive is set to a large enough size.

- B

[Seamless]

cheers for the thought but i have checked 'post_max_size' its set at 8MB and upload_max_filesize is set to 10MB.

Thats why i'm a bit stuck, could it be the execution time perhaps?

[Jessica]

What is the error you get?

[Seamless]

i'm not getting one, the server i'm using has errors turned off by default. Is there a statement i can use which will display an error like mysql_error(); does?

I don't really want to have to go in and edit my php.ini, but if i have to i suppose i can.

Seamless

[Seamless]

ok, i edited my php.ini to show errors and this is the error i get even though i have increased the memory_limit in the php.ini to 128MB

[quote]
Allowed memory size of 134217728 bytes exhausted (tried to allocate 15488 bytes)
[/quote]

I'm getting a bit nervous now, i've never altered the memory_limit so i have a few questions:

1. Is there a maximum i can increase it to?
2. What are the effects of increasing it?

Seamless

[HuggieBear]

Seamless,

The GD library uses a lot of memory on an image that size.  The best bet is to leave the settings in php.ini as they were and change the value at runtime using [url=http://uk.php.net/manual/en/function.ini-set.php]ini_set()[/url].

So on each page you have GD functions, set this at the top:

[code]<?php
// Increase available memory
ini_set("memory_limit","256M");
?>[/code]

I included a link in a previous post: http://www.phpfreaks.com/forums/index.php/topic,121661.0.html

Regards
Huggie