Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

Dynamically Invoking Class Method Args

Tags:

I am working on something where I need to be able to pass an indexed array of args to a method, much like how call_user_func_array works. I would use call_user_func_array but it is not an OOP approach, which is undesired, and it requires the method to be static, which breaks the target class's OO.

I have tried to use ReflectionClass but to no avail. You cannot invoke arguments to a method of the class, only the constructor. This is unfortunately, not desireable.

So I took to the man pages and looked at ReflectionFunction but there is no way to instantiate the class, point it to a method, and then invokeArgs with it.

Example using ReflectionFunction ( remember, this question is tagged PHP 5.4, hence the syntax):

$call = new \ReflectionFunction( "(ExampleClass())->exampleMethod" );
$call->invokeArgs( ["argument1", "argument2"] );

This fails with:

Function (Index())->Index() does not exist

Example using ReflectionMethod

$call = new \ReflectionMethod( "ExampleClass", "exampleMethod" );
$call->invokeArgs( new ExampleClass(), ["argument1", "argument2"] );
print_r( $call );

This fails with:

ReflectionMethod Object
(
    [name] => Index
    [class] => Index
)

The arguments are never passed to the method.

The desired results are:

class ExampleClass() {
    public function exampleMethod( $exampleArg1, $exampleArg2 ){
        // do something here
        echo "Argument 1: {$exampleArg1}\n";
        echo "Argument 2: {$exampleArg2}\n";
    }
}

$array = [ 'exampleArg1Value', 'exampleArg2Value' ];

If I passed $array to an instance of ExampleClass->exampleMethod(), I would only have one argument, which would be an array. Instead, I need to be able to pull the individual arguments.

I was thinking that if there was a way to call ReflectorFunction on a ReflectorClass I would in in ship-shape and on my way, but it doesn't look like that is possible.

Does anyone have anything they have used to accomplish this previously?


Donate For Us

If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!