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    ReflectionFunctionAbstract::getParameters

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    ReflectionFunctionAbstract::getParameters — Obtiene los parámetros

    Descripción

    public ReflectionFunctionAbstract::getParameters(): array

    Devuelve los parámetros en forma de array de ReflectionParameter.

    Advertencia

    Esta función no está documentada actualmente, solamente se encuentra disponible la lista de parámetros.

    Parámetros

    Esta función no tiene parámetros.

    Valores devueltos

    Parámetros, en forma de objetos ReflectionParameter.

    Ver también

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    User Contributed Notes 2 notes

    up
    8
    dabidi at slupca dot pl
    9 years ago
    This is part of my private framework that uses reflection.
    This function get arguments list from theme method and puts corresponding vars from $_REQUEST ($_GET, $_POST, and $_COOKIE)

    <?php
    public static function fire_theme_method($class, $method)
    {
                $fire_args=array();
           
                $reflection = new ReflectionMethod($class, $method);

        foreach(    $reflection->getParameters() AS $arg)
        {
            if(    $_REQUEST[$arg->name])
                $fire_args[$arg->name]=$_REQUEST[$arg->name];
            else
                $fire_args[$arg->name]=null;
        }
           
        return     call_user_func_array(array($class, $method), $fire_args);
    }
    ?>
    For example, if my theme method needs only id, and we get this url:
    http://example.com/my_class/my_method/?id=12&some_unwanted_var=123
    will be ignored some_unwanted_var

    Of course behind this i have .htaccess, autoloader and controller
    up
    1
    a dot lucassilvadeoliveira at gmail dot com
    4 years ago
    We can use this functionality to automatically pass arguments to our function based on some data structure.

    NOTE: I am using a php 8.0> feature called "Nameds parameter".

    <?php

    $valuesToProcess     = [
          'name' => 'Anderson Lucas Silva de Oliveira',
          'age' => 21,
          'hobbie' => 'Play games'
    ];

    function     processUserData($name, $age, $job = "", $hobbie = "")
    {
            $msg = "Hello $name. You have $age years old";
        if (!empty(    $job)) {
            $msg .= ". Your job is $job";
        }

        if (!empty(    $hobbie)) {
                $msg .= ". Your hobbie is $hobbie";
        }

        echo     $msg . ".";
    }

    $refFunction = new ReflectionFunction('processUserData');
    $parameters = $refFunction->getParameters();

    $validParameters = [];
    foreach (    $parameters as $parameter) {
        if (!    array_key_exists($parameter->getName(), $valuesToProcess) && !$parameter->isOptional()) {
            throw new     DomainException('Cannot resolve the parameter' . $parameter->getName());
        }

        if(!    array_key_exists($parameter->getName(), $valuesToProcess)) {
            continue;
        }

            $validParameters[$parameter->getName()] = $valuesToProcess[$parameter->getName()];
    }

    $refFunction->invoke(...$validParameters);
    ?>

    Results in:

    Hello Anderson Lucas Silva de Oliveira. You have 21 years old. Your hobbie is Play games.
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