default argument values

[Nikola Skoric]

Hi there, is something like this possible in PHP:

function foo($a=1, $b=2, $c=3) {
//...
}

foo($b=2);

Will this assign $a and $c to default values?

--
"Now the storm has passed over me
I'm left to drift on a dead calm sea
And watch her forever through the cracks in the beams
Nailed across the doorways of the bedrooms of my dreams"

[Ksu]

Re: default argument values

only
function foo($b=2,$a=1, $c=3) {
}

foo(2);

[ZeldorBlat]

Re: default argument values


Nikola Skoric wrote:[color=blue]
> Hi there, is something like this possible in PHP:
>
> function foo($a=1, $b=2, $c=3) {
> //...
> }
>
> foo($b=2);
>
> Will this assign $a and $c to default values?
>
> --
> "Now the storm has passed over me
> I'm left to drift on a dead calm sea
> And watch her forever through the cracks in the beams
> Nailed across the doorways of the bedrooms of my dreams"[/color]

Unfortunately it doesn't work that way. The default is only taken when
the argument is not specified at all and I don't think you can name the
parameters like that when you call the function. The best you can do
is something like this:

function foo($a = 1, $b = 2, $c = 3) {
//do something
}

//Is valid, $a = 5, $b = 2, $c = 3
foo(5);

//Is valid, $a = 5, $b = 42, $c = 3
foo(5, 42);

//Syntactically valid, but results in $a = 5, $b = 2, and $c = 3
inside the function.
//Basically assign 5 to $b (outside the function) then pass the result
(5) as the first
//parameter to foo():
foo($b = 5);

[Iván Sánchez Ortega]

Re: default argument values

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Nikola Skoric wrote:
[color=blue]
> Hi there, is something like this possible in PHP:
>
> function foo($a=1, $b=2, $c=3) {
> //...
> }
>
> foo($b=2);
>
> Will this assign $a and $c to default values?[/color]

No.

- --
- ----------------------------------
Iván Sánchez Ortega -i-punto-sanchez--arroba-mirame-punto-net

Give a man a fish, he owes you one fish.
Teach a man to fish, you give up your monopoly on fisheries.
(read on slashdot.org)
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