Hello,
If I have an array made up of a bunch of key =value pairs, how can I
pass the values of each key as an argument to a function, given that
the number of items in the array are not static (i.e: sometimes
there's one item, sometimes there's two)?
For example, if I have the following array:
$list = array('sky' ='blue', 'grass' ='green');
$list = array_values($l ist);
I'd like to pass the two values in $list to a function that has two
arguments, i.e:
function color($sky, $grass) { }
The trick is is that $list will not always contain two items -
sometimes one, three, four, etc, so it has to pass them dynamically to
the function. I know about call_user_func( ), and how I can pass
parameters to it, but I'm having a difficult time trying to pass
multiple parameters given that I don't know how many I need to pass.
Can anyone help?
Rob 3 3447
"rob" <ro*@rawb.netsc hreef in bericht
news:11******** *************@q 75g2000hsh.goog legroups.com...
Hello,
<snip>
The trick is is that $list will not always contain two items -
sometimes one, three, four, etc, so it has to pass them dynamically to
the function. I know about call_user_func( ), and how I can pass
parameters to it, but I'm having a difficult time trying to pass
multiple parameters given that I don't know how many I need to pass.
Can anyone help?
Rob
call_user_func_ array()
rob wrote:
Hello,
If I have an array made up of a bunch of key =value pairs, how can I
pass the values of each key as an argument to a function, given that
the number of items in the array are not static (i.e: sometimes
there's one item, sometimes there's two)?
For example, if I have the following array:
$list = array('sky' ='blue', 'grass' ='green');
$list = array_values($l ist);
I'd like to pass the two values in $list to a function that has two
arguments, i.e:
function color($sky, $grass) { }
The trick is is that $list will not always contain two items -
sometimes one, three, four, etc, so it has to pass them dynamically to
the function. I know about call_user_func( ), and how I can pass
parameters to it, but I'm having a difficult time trying to pass
multiple parameters given that I don't know how many I need to pass.
Can anyone help?
Rob
Just pass them as an array, i.e.
color($list);
function color ($colors) {
if (is_array($colo rs))
foreach ($colors as $c)
process one color from the list here
else
process a single color here
}
You might want to make this a function which pulls out each item in the
list and calls another function to process a single color (if the
processing is separate, that is).
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp. js*******@attgl obal.net
=============== ===
On 13 Aug, 01:42, rob <r...@rawb.netw rote:
>
For example, if I have the following array:
$list = array('sky' ='blue', 'grass' ='green');
$list = array_values($l ist);
I'd like to pass the two values in $list to a function that has two
arguments, i.e:
function color($sky, $grass) { }
call_user_func( 'color', $list);
function color()
{
$params = func_get_args() ;
....
But it's much cleaner to do this:
color($list);
function color($list) // expect an array as input
{
....
Which eliminates the positional problems which are exacerbated by
variable argument parsing.
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