Shawn McKenzie wrote:
Michael A. Peters wrote:
Rene Veerman wrote:
On Sat, Feb 13, 2010 at 9:05 AM, Michael A. Peters <mpeters@xxxxxxx>
wrote:
How do I specify a default null object, or otherwise make the argument
argument optional?
To my knowledge: can't be done.
But you can check any args through the func_get_arg*() functions, then
per-parameter push 'm through a check function that checks if their
primary properties are set.
It's equivalent to checking for null ( / bad) objects.
Thank you to everybody. I think I will see how far I can get with
func_get_arg - it may solve the problem.
The other hackish solution I thought of is to put the object arguments
into a key/value array and pass the array as a single argument to the
function. That way I can check for the key and if the key is set, grab
the object associated with it.
Maybe I mis-read your post, but what's wrong with Jochem's method.
That's what I was going to propose.
Possibly nothing - but passing an array with keys I think makes it
easier to determine what the object (a DOM node) corresponds with by
just looking at the key (IE for a single integral there can be lower
limit, upper limit, etc.)
Maybe after implementing it that way and actually getting things
working, I can look into passing the dom objects as actual arguments
instead of wrapping them in array.
But some existing functions like tidy take some of their optional
arguments in a key->value array and it is now in php core so it isn't
unprecedented to use a key->value array.
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