$_REQUEST variable

Where besides (http://www.php.net/manual/en/printwn/reserved.variables.php#reserved.variables.server) can I find information on what properties are included in the $_REQUEST array variable.

Specifically, I need to know if there is a way to get a variable similar to ASP's [Request.BinaryRead(Request.ByteCount)].

Any help appreciated.

Are you trying to get the size of a file that has been POST'ed using a file upload form ? or the total size of all data in the form ?

If it's the size of the uploaded file then you can grab it either from $REQUEST or $FILES

If your input type=file was named 'userfile', then it would be
$REQUEST['userfile']['size'];
or
$FILES['userfile']['size'];

For the total size of everything POST'ed you can try:
$_SERVER['CONTENT_LENGTH'];

If you ever want to see what's inside a variable you can always use print_r() - it's often a huge help at seeing exactly what's coming through.

allan