How to check if a function is callable with parameters?

Question

I call the function using call_user_func_array:

call_user_func_array(array($this, 'myFunction'), array('param1', 'param2', 'param3'));

Everything is fine, if I do not know how many parameters a function requires. If a function needs 4 parameters, it sends me an error, I would like to check if I can call the function (with an array of parameters). is_callable () does not allow checking parameters. Edit: if the call fails, I need to call another function, so I need a check.

Thanks!

Answer 1

You can use reflection to get the number of parameters:

$refl = new ReflectionMethod(get_class($this), 'myFunction');
$numParams = $refl->getNumberOfParameters();

or

$numParams = $refl->getNumberOfRequiredParameters();

See here for more information.

Answer 2

- . PHP , , , .

. func_get_args().

: crescentfresh, , . ( ) , :

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