PHP 8.5.0 Alpha 2 available for testing

    ReflectionMethod::invokeArgs

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

    ReflectionMethod::invokeArgs — Invoca los argumentos

    Descripción

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

    Invoca el método reflejado y le pasa los argumentos en forma de array.

    Parámetros

    object

    El objeto sobre el cual invocar el método. Si el método es estático, puede pasarse null para este argumento.

    args

    Los argumentos a pasar al método, en forma de array.

    Valores devueltos

    Devuelve el resultado del método.

    Errores/Excepciones

    Una ReflectionException si object no es una instancia de la clase prevista para este método.

    Una ReflectionException si la invocación del método falla.

    Historial de cambios

    Versión Descripción
    8.0.0 Las claves de args serán interpretadas como los nombres de los argumentos, en lugar de ser ignoradas silenciosamente.

    Ejemplos

    Ejemplo #1 Ejemplo para ReflectionMethod::invokeArgs()

    <?php
    class HelloWorld {

    public function     sayHelloTo($name) {
    return     'Hello ' . $name;
    }

    }

    $reflectionMethod = new ReflectionMethod('HelloWorld', 'sayHelloTo');
    echo     $reflectionMethod->invokeArgs(new HelloWorld(), array('Mike'));
    ?>

    El ejemplo anterior mostrará :

    Hello Mike

    Notas

    Nota:

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

    Ver también

    Found A Problem?

    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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