ReflectionMethod::invokeArgs

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

    ReflectionMethod::invokeArgs — Invoca 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

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    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
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    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
    14 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
    14 years ago
    Passing arguments by reference works:
    <?php $rm->invokeArgs($object, array(&$foo, $bar)); ?>
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