PYTHON call_user_func_array

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Python replacement for PHP's call_user_func_array [ edit | history ]
# if you already have a function object:
result = function(*param_arr)
# if you have the name of the function:
result = eval(function_name)(*param_arr)

PHP call_user_func_array

PHP original manual for call_user_func_array [ show | php.net ]

call_user_func_array

(PHP 4 >= 4.0.4, PHP 5)

call_user_func_arrayCall a user function given with an array of parameters

Description

mixed call_user_func_array ( callback $function , array $param_arr )

Call a user defined function with the parameters in param_arr .

Parameters

function

The function to be called.

param_arr

The parameters to be passed to the function, as an indexed array.

Return Values

Returns the function result, or FALSE on error.

Examples

Example #1 call_user_func_array() example

<?php
function debug($var$val)
{
    echo 
"***DEBUGGING\nVARIABLE: $var\nVALUE:";
    if (
is_array($val) || is_object($val) || is_resource($val)) {
        
print_r($val);
    } else {
        echo 
"\n$val\n";
    }
    echo 
"***\n";
}

$c mysql_connect();
$host $_SERVER["SERVER_NAME"];

call_user_func_array('debug', array("host"$host));
call_user_func_array('debug', array("c"$c));
call_user_func_array('debug', array("_POST"$_POST));
?>

Example #2 call_user_func_array() using namespace name

<?php

namespace Foobar;

class 
Foo {
    static public function 
test($name) {
        print 
"Hello {$name}!\n";
    }
}

// As of PHP 5.3.0
call_user_func_array(__NAMESPACE__ .'::Foo::test', array('Hannes'));
// Hello Hannes!

// As of PHP 5.3.0
call_user_func_array(array(__NAMESPACE__ .'::Foo''test'), array('Philip'));
// Hello Philip!

?>

Example #3 Using lambda function

<?php

$func 
= function($arg1$arg2) {
    return 
$arg1 $arg2;
};

var_dump(call_user_func_array($func, array(24))); /* As of PHP 5.3.0 */
// int(8)

?>

Notes

Note: Referenced variables in param_arr are passed to the function by a reference, others are passed by a value. In other words, it does not depend on the function signature whether the parameter is passed by a value or by a reference.

See Also