(PHP 4 >= 4.0.4, PHP 5)
call_user_func_array — Call a user function given with an array of parameters
Call a user defined function with the parameters in param_arr .
The function to be called.
The parameters to be passed to the function, as an indexed array.
Returns the function result, or FALSE on error.
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 = new StdClass();
$host = $_SERVER["PHP_SELF"];
call_user_func_array('debug', array("host", $host));
call_user_func_array('debug', array("c", $c));
call_user_func_array('debug', array("_POST", $_POST));
?>
위 예제의 출력 예시:
Example #2 call_user_func_array() using namespace name
<?php
namespace Foobar;
class Foo {
static public function test($name) {
print "Hello {$name}!\n";
}
}
// As of PHP 5.3.0
call_user_func_array(__NAMESPACE__ .'\Foo::test', array('Hannes'));
// As of PHP 5.3.0
call_user_func_array(array(__NAMESPACE__ .'\Foo', 'test'), array('Philip'));
?>
위 예제의 출력 예시:
Hello Hannes! Hello Philip!
Example #3 Using lambda function
<?php
$func = function($arg1, $arg2) {
return $arg1 * $arg2;
};
var_dump(call_user_func_array($func, array(2, 4))); /* As of PHP 5.3.0 */
?>
위 예제의 출력:
int(8)
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.