(PHP 8 >= 8.2.0)
ReflectionMethod::hasPrototype — Returns whether a method has a prototype
Returns whether a method has a prototype.
Cette fonction ne contient aucun paramètre.
   Returns true if the method has a prototype, otherwise false.
  
Exemple #1 ReflectionMethod::hasPrototype() example
<?php
class Hello
{
    public function sayHelloTo($name)
    {
        return 'Hello '.$name;
    }
}
class HelloWorld extends Hello
{
    public function sayHelloTo($name)
    {
        return 'Hello world: '.$name;
    }
}
$reflectionMethod = new ReflectionMethod('HelloWorld', 'sayHelloTo');
var_dump($reflectionMethod->hasPrototype());
?>
L'exemple ci-dessus va afficher :
bool(true)