Question

I’m using reflection to dynamically call methods.

$object = new $class;
$reflector = new ReflectionMethod($class, $method);
$reflector->invokeArgs($object, $arguments);

The $arguments array looks like:

Array
(
    [fooparam] => false
    [id] => 238133
)

The method called could be:

class MyClass
{
    public function myMethod ($id, $fooParam)
    {
        // Whatever
    }
}

The problem is that everything comes from frontend designers, depending on data-* attributes, href… so $arguments array has arbitrary sorting.

How can I sort this array to match method parameters?
O maybe, is there a better solution? Named parameters?

Answer 1

Use ReflectionMethod::getParameters() to get a list of arguments and filter map them to their corresponding position, e.g.:

$sorted_args = array_map(function($param) use($arguments) {
    $name = $param->getName();
    if (!isset($arguments[$name]) && !$param->isOptional())
        throw new BadMethodCallException("Argument '{$name}' is mandatory");

    return isset($arguments[$name]) ? $arguments[$name] : $param->getDefaultValue();
}, $reflector->getParameters());

You could also use a simple foreach loop, it’s up to you.

Then invoke the method with $sorted_args instead:

$reflector->invokeArgs($object, $sorted_args);