如何从用户输入调用任何方法或属性 - How to call any method or property from user input

How to call any method or property from user input

我正在使用这个php库

fzaninotto/Faker

        <?php
         // require the Faker autoloader
         require_once '/path/to/Faker/src/autoload.php';
        // use the factory to create a Faker'Generator instance
        $faker = Faker'Factory::create();
        $name=$_POST['name'];
         switch ($name) {
        case 'text':
               echo $faker->text;
            break;
           case 'name':
               echo $faker->name;
            break;
           case 'address':
                echo $faker->address;
            break;
        default:
             echo $faker->anything;
            break;
    }
     ?>

AS 你可以看到调用"faker"
的任何方法或属性我需要使用开关语句。
有没有更好的做事方法？？

<form action="index.php" method="post">
<input type="text" name="name" value="text" /><br><br>
<input type="submit" value="Run" />
</form>

我想做的是这样的

<?php
$name=$_POST['name'];
echo $faker->$name;
//So if user type text
echo $faker->text ; 
//or if user type "words($nb = 3, $asText = false)"
echo $faker->words($nb = 3, $asText = false);
?>

<?php
    $userinput='paragraph|{"nb":"10","text":"true"}';
        $explode=explode('|',$userinput);
        $functionName=$explode[0];
        $arg=json_decode(end($explode),true);
        echo  call_user_func_array(array($this->faker, $functionName), $arg);
?>