The call_user_func_array Function
The call_user_func_array function allows you to call a callback by passing parameters as an array. The first parameter is the name of the function or method, and the second is an array of arguments.
Syntax
call_user_func_array(callable $callback, array $args);
Example
Calling a simple function by passing parameters through an array:
<?php
function sum($a, $b) {
return $a + $b;
}
$res = call_user_func_array('sum', [2, 3]);
echo $res;
?>
Code execution result:
5
Example
Calling a class method by passing parameters:
<?php
class Calculator {
public function multiply($a, $b) {
return $a * $b;
}
}
$calc = new Calculator();
$res = call_user_func_array([$calc, 'multiply'], [4, 5]);
echo $res;
?>
Code execution result:
20
Example
Usage with an anonymous function:
<?php
$func = function($a, $b, $c) {
return $a + $b + $c;
};
$res = call_user_func_array($func, [1, 2, 3]);
echo $res;
?>
Code execution result:
6
See Also
-
the
call_user_funcfunction,
which calls a callback function with individual arguments -
the
function_existsfunction,
which checks for the existence of a function
