CODEWITHSUNDEEP
phparraysassociative-arraynamed-parametersfunction-parameter
Nik
Nik

Reputation: 9431

Is it possible to pass an associative array to a function and have those elements treated as individual parameters?

In short, what I want is a kind of export() function (but not export()), it creates new variables in a symbols table and returns the number of created vars.

I'm trying to figure out if it is possible to declare a function

function foo($bar, $baz)
{
    var_dump(func_get_args());
}

And after that pass an array so that each value of array would represent parameters.

Just wondering if it is possible (seems that is not).

I need this for dynamic loading, so number of arguments, size of array may vary - please don't offer to pass it as

foo($arr['bar']);

and so on.

Again, ideal thing solution will look like

foo(array('foo'=>'1', 'bar'=>'2', ..., 'zzz'=>64));

for declaration

function foo($foo, $bar, ..., $zzz) {}

As far as I rememeber in some dynamic languages lists may behave like that (or maybe I'm wrong).

(I want to create dynamically parameterized methods in a class and enjoy a built-in mechanism of controlling functions' number of arguments, default value, and so on. Such a mechanism would allow me to get rid of array params and func_get_args() and func_get_num() calls in the method body).

Upvotes: 1

Views: 226

Answers (3)

runfalk
runfalk

Reputation: 1996

I don't know about the speed but you could use ReflectionFunction::getParameters() to get what name you gave the parameters, combined with call_user_func_array() to call the function. ReflectionFunction::invokeArgs() could be used as well for invoking.

Upvotes: 2

GWW
GWW

Reputation: 44093

How about using extract()?

<?php

/* Suppose that $var_array is an array returned from
   wddx_deserialize */

$size = "large";
$var_array = array("color" => "blue",
                   "size"  => "medium",
                   "shape" => "sphere");
extract($var_array, EXTR_PREFIX_SAME, "wddx");

echo "$color, $size, $shape, $wddx_size\n";

?>

(Code taken from PHP example)

Upvotes: 0

Mike Sherov
Mike Sherov

Reputation: 13427

You're looking for call_user_func_array

example:

function foo($bar, $baz)
{
    return call_user_func_array('beepboop',func_get_args());
}

function beepboop($bar, $baz){
    print($bar.' '.$baz);
}

foo('this','works');
//outputs: this works

Upvotes: 4

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