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call_user_func_array


(PHP 4 >= 4.0.4, PHP 5)

call_user_func_arrayCall a user function given with an array of parameters

Beschreibung

mixed call_user_func_array ( callback $function , array $param_arr )

Call a user defined function with the parameters in param_arr .

Parameter-Liste

function

The function to be called.

param_arr

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

Rückgabewerte

Returns the function result, or FALSE on error.

Beispiele

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function foobar($arg, $arg2) { echo __FUNCTION__, " got $arg and $arg2\n"; } class foo { function bar($arg, $arg2) { echo __METHOD__, " got $arg and $arg2\n"; } } // Call the foobar() function with 2 arguments call_user_func_array("foobar", array("one", "two")); // Call the $foo->bar() method with 2 arguments $foo = new foo; call_user_func_array(array($foo, "bar"), array("three", "four"));

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

foobar got one and two
foo::bar got three and four

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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'));

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

Hello Hannes!
Hello Philip!

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$func = function($arg1, $arg2) { return $arg1 * $arg2; }; var_dump(call_user_func_array($func, array(2, 4))); /* As of PHP 5.3.0 */

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

int(8)

Anmerkungen

Hinweis: 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.

Siehe auch