ReflectionFunctionAbstract::getParameters

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

    ReflectionFunctionAbstract::getParameters — Gets parameters

    Description

    public ReflectionFunctionAbstract::getParameters(): array

    Get the parameters as an array of ReflectionParameter, in the order in which they are defined in the source.

    Parameters

    This function has no parameters.

    Return Values

    The parameters, as a ReflectionParameter object.

    See Also

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    User Contributed Notes 2 notes

    up
    9
    dabidi at slupca dot pl
    8 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
    4
    a dot lucassilvadeoliveira at gmail dot com
    3 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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