是否可以将函数存储在数组中并根据if语句结果调用它们？

Question

I'm new using PHP, and I'm trying to store functions in an array to call them later using an if statement.

I've tried but, functions are called before if statement, so this is an example of what I need:

    function a()  {
        return 'a';
    }

    function b()  {
        return 'b';
    }

    $array = [a(), b()];

    if($condition === 'a') {
        $array[0];
    }

What I want to achieve is to use a specific function depending on if validation.

Answer 1

Just store the function name as a string and call call_user_func.

function a()  {
    return 'a';
}

function b()  {
    return 'b';
}

$array = ['a', 'b'];

if($condition === 'a') {
    call_user_func($array[0]);
}