checking file size before ftp upload

I'm developing a message board, and in the user profile, one may upload a profile picture from their computer. i'd like to limit their picture size to, say, 50kb. I understand the ftp_size function, but I'd like to check the size before it's uploaded. Is that possbile?

<?

if ($userfile_size > 50000) {
echo "file is too big.<br>";
echo "<a href='javascript:history.back()'>back</a>";
exit();
}

?>

thanks for responding. questions:

would i be right in saying that the $userfile variable would be the form input name from the submission form? well, i'll try playing with it and see what happens. thanks again.

Hi

Use something like this on the form which will upload your file -

<FORM ACTION="process_upload.php3" METHOD=POST ENCTYPE="multipart/form-data">
<input type=FILE name="userfile" size="30">

Then put the check for the file size in the process_upload.php3 script -

// Check file size in not too large
if ($userfile_size > 50000) { do whatever you want }

The variable $userfile comes from the name of the form field. _size returns the file size.

I hope this helps

Kevin

I don't understand ftp_size =(

$file= 'filename with space.txt';
$size = ftp_size($this->ftp, urldecode($file) );