Hi,

I've seen lot of code that handle forms, which creates input fields with names containing square brackets.

I understand that this is being somehow converted to PHP arrays when a PHP script examines the $_POST variable.

My questions about this:

• What is the mechanism behind? At which point this names that merely contain brackets are converted to arrays? Is this a feature of the HTPP protocol? Of web servers? Of the PHP language?

• Continuing the previous question, is this a commonly used hack or a normal programming tool?

• What are (all) the rules of using brackets in input field names?

• Can multidimensional arrays be created this way?

Thanks,

Gidi