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ReflectionMethod::invokeArgs

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

ReflectionMethod::invokeArgsInvoca un método con argumentos

Descripción

public ReflectionMethod::invokeArgs(object $object, array $args): mixed

Invoca el método reflejado y pasa sus argumentos como array.

Parámetros

object

Objeto en el que se invoca al método. En caso de métodos estáticos, se podrá introducir null en este parámetro.

args

Argumentos que se pasan a la función, en un array.

Valores devueltos

Devuelve el resultado del método.

Errores/Excepciones

Lanza ReflectionException si el parámetro object no contiene una instancia de la clase en la que está declarado este método.

Lanza ReflectionException si falla la invocación al método.

Ejemplos

Ejemplo #1 Ejemplo de ReflectionMethod::invokeArgs()

<?php
class HolaMundo {

public function
saludarA($nombre) {
return
'Hola ' . $nombre;
}

}

$metodoReflexionado = new ReflectionMethod('HolaMundo', 'saludarA');
echo
$metodoReflexionado->invokeArgs(new HolaMundo(), array('Miguel'));
?>

El resultado del ejemplo sería:

Hola Miguel

Notas

Nota:

Si la función tiene argumentos que necesitan ser referencias, éstos deben ser referencias en la lista de argumentos pasados.

Ver también

add a note

User Contributed Notes 4 notes

up
12
serg dot smertin at gmail dot com
14 years ago
We can do black magic, which is useful in templating block calls:

<?php
$object
->__named('methodNameHere', array('arg3' => 'three', 'arg1' => 'one'));

...

/**
* Pass method arguments by name
*
* @param string $method
* @param array $args
* @return mixed
*/
public function __named($method, array $args = array())
{
$reflection = new ReflectionMethod($this, $method);

$pass = array();
foreach(
$reflection->getParameters() as $param)
{
/* @var $param ReflectionParameter */
if(isset($args[$param->getName()]))
{
$pass[] = $args[$param->getName()];
}
else
{
$pass[] = $param->getDefaultValue();
}
}

return
$reflection->invokeArgs($this, $pass);
}
?>
up
4
agent_harris at secure-mail dot biz
13 years ago
There is a simple workaround for the reference passing problem:
Since the reflection api has to handle all parameters in a generic way it has no chance to guess if you wish to pass data per value or reference.

But it seems that you can also decide to pass a reference from where you call the function or method (not just only by the ampersand prefix in its declaration).

So just do the following; which worked for me:

<?php
//...
$method->invoke($object, $inputValue, &$outputValue);
?>

Since this will only be necessary with arrays and primitive data types it should be acceptable in most cases to know in advance if you need to pass per reference. But it is probably although necessary to keep the ampersand always in the declaration (because of the at least two layers between the actual function and your invoke call).

If this is the expected behavior it will maybe make sense to mention it in the documentation for invoke and invokeArgs.
up
2
CodeCoutureXX at gmail dot com
9 years ago
If you need to call ReflectionMethod::invokeArgs() on a static function you can pass NULL in for the $object parameter.

Example:

<?php
class myClass {
public static
myStaticFunc($a, $b) {
return
$a + $b;
}
}

$ref = new ReflectionMethod('myClass', 'myStaticFunc');
echo
$ref->invokeArgs(NULL, [12, 7]);
?>

produces the following output:

19
up
0
cweiske at cweiske dot de
13 years ago
Passing arguments by reference works:
<?php $rm->invokeArgs($object, array(&$foo, $bar)); ?>
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