pass undefined number of arguments to function

[gaucho]

Hello,
I have a problem passing an undefined number of arguments to a function.
The problem is that the function belongs to a class and itself has to pass this number of arguments to a function in another class.

The function of the second class gets the arguments using func_get_args().

The first function gets the arguments as an array or string, can't think of a better way. The content of the array now has to be transformed into a set of arguments to be passed to the other function, and this is the problem.
Does anybody have an idea?

Little code:
script one (main script):

$firstcall = new futils;
$res = $firstcall->func_a($in); //$in = array or string

script with class futils:

function func_a($in) {

//Transformation should be here

$out = $this->lastclass->func_b() //should pass the undefined number of arguments
//lastclass instance is defined in a function at 
//the beginning of the class 
return $out;
}

Well, func_b() now processes the arguments

Tried a lot already, eval(), implode(), etc, but func_a() only passes an array or a string as one single argument.

Thanks in advance.

Best regards

gaucho

[Installer]

If I understand your problem correctly, can't you just do something like:

$values_to_pass[] = $in[$key_of_first_desired_element];
$values_to_pass[] = $in[$key_of_second_desired_element];
// and so on...
$out = $this->lastclass->func_b($values_to_pass);

Or just pass the whole $in array on to func_b and retrieve the values you need there.

[gaucho]

Hello Installer,
thanks for your reply, but this is exacrtly the point, you pass func_b just ONE argument, namely an array.
But it has to be a comma delimeted list of arguments as usual.

=> func_b($arg1, $arg2, ...., $arghX){...........

cheers

gaucho

[laserlight]

Do you really need to use multiple arguments?

Can you write your receiving function to work with an array instead, by iterating over it?

[tsinka]

Hi,

you might want to look at the manual about func_get_args

Thomas

[Installer]

OK, I see: a comma-delimited list of one argument. I'll have to think on it.

[gaucho]

Hello again,

many thanks for your posts.
laserlight, the problem is that the recieving function belongs to a db wrapper class => ADODB, which containes the function in each driver file plus main include file, which would mean I would have to change all of them. The second problem is that ADODB is updated pretty often, which means I would have to change all the files periodically. This is no optimal solution.

tsinka, I already tested func_get_args(), but the problem is it returns not only a 1-dimensional result array but a 2-dimensional one. This would be the same as passing a normal array which doesn't help.

But thanks anyway.

Maybe somebody comes up with a practicable solution.

regards

gaucho

[tsinka]

Hi,

try something like this:

function func_a($in) { 
$args = array()

if (is_array($in)) {
  $i = 0;
  foreach($in as $key=>$value) {
    $args["param".$i] = $value;
    $i++;
  }
} else {
  $args['param0'] = $in;
}

$keys = array_keys($args);
extract($args);

//Transformation should be here
$ev = "\$out = \$this->lastclass->func_b(\$";
$ev .= implode(",\$",$keys);
$ev .= ");";

eval($ev); //should pass the undefined number of arguments 
//lastclass instance is defined in a function at 
//the beginning of the class 
return $out; 
}

I don't know if it is the best solution but it should work. If $in is an array with keys param0,param1... already just use $args=$in instead of the foreach loop.

Thomas

[gaucho]

Hello posters,

thanks for your replies, but I found a way how it works.

Since I hate people that post a question, and if they find a solution themselves, they don't even post an answer, or post something like:

"Thanks for your answers, they were all wrong, but I found a solution regards a......hole"

I post my solution here:

It is (tremolo...............)

88

?????????? You might ask, little joke! Think I read too much of Hijackers guide through the galaxy

It is

$out_str = call_user_func_array(array(&$this->db_conn, "Concat"), $in_arr);

Where &this->db_conn is the instance of the actual class object, and "Concat" the function name of the function in the class called.

Hope this helps one or another

Happy coding and regards

gaucho