函数接受整数或数组值

Question

Can I create a PHP function which will accept either integer or array values? Can the logic be determined upon reaching the function, or should it be done prior to calling it? (i.e. I want to avoid using one function for arrays, and another for single integers.)

I could have two arguments one integer, one array, and then call the function with one as null. But is a scenario where I don't know the type at the moment it would be called.

function my_function($integer, array $array)
{
    $integer = '';

    ...

Perhaps, before calling my function, I should convert my integer into a single keyed array so it wouldn't matter.

Answer 1

If you are certain you will only be passing an array or integer type, you could do the following:

function my_function($param)
{
    if (is_array($param)) {
      //treat param as array
    } else {
      //treat param as integer
    }
...
}