Image upload error if file too large

[pilot]

I am getting this error when a large image is uploaded:

Fatal error: Allowed memory size of 20971520 bytes exhausted (tried to allocate 2304 bytes) in /xxxxx/xxxx/xxxxxx/xxxxxxx/classifieds/image-inc.php on line 104

I would of expected a message saying that the file was too large to upload and make it smaller and try again?

[Michael P]

Unfortunately, PHP doesn't work that way. You need to allocate enough memory to your scripts in the PHP.INI script so that these kinds of things don't happen. There isn't a way to "prequalify" a file before it is sent to the server for processing to catch something like this before it happens.

[pilot]

Hi Michael

Thanks for the lightening quick reply!

I am on a shared server so I do not have access to the php.ini script, and I have already had server admin increase allocated memory to 20mb to php.

Seems I will have to block picture uploads in case people upload a picture straight from their digital camera without loosing file size. Can I block picture uploads in classifieds?

[pilot]

I have asked my server admin about this problem and they pointed me here:

http://uk2.php.net/features.file-upload

"upload_max_filesize integer

The maximum size of an uploaded file.

they suggest "If you are using PHP you can limit the file upload"

could this help?