can I pass arguments to my function through add_action?

Question

can I do something like that? to pass arguments to my function? I already studied add_action doc but did not figure out how to do it. What the exact syntax to pass two argum

Answer 1

Well, this is old, but it has no accepted answer. Reviving so that Google searchers have some hope.

If you have an existing add_action call that doesn't accept arguments like this:

function my_function() {
  echo 100;
}

add_action('wp_footer', 'my_function');

You can pass an argument to that function by using an anonymous function as the callback like this:

function my_function($number) {
  echo $number;
}

$number = 101;
add_action('wp_footer', function() { global $number; my_function($number); });

Depending on your use case, you might need to use different forms of callback, possibly even using properly declared functions, as sometimes you may encounter trouble with scope.