Convert Switch to Array

Question

so I have a function that handles various other functions, and I use a switchstatement to handle these functions with cases and breaks.

It all works fine. Would it be possible for me to change this into an array with keys?

Here's the code

switch ($intMultiFun) {
    case "a":
        handle a function
        break;
    case "b":
        handle a function
        break;
    case "c":
        handle a function
        break;
    case "d":
        handle a function
        break;
}

Answer 1

$map = array(
 'a' => 'a_func_name',
 'b' => 'b_func_handler_name',
  ...
);

if (array_key_exists($intMultiFun, $map)) {
   call_user_func($map[$intMultiFun]); // optionally you can pass parameters too
}

Answer 2

You're looking for in_array(), it seems:

if(in_array($intMultiFun, ['a', 'b', 'c', 'd']))
{
   //handle a function
}

-short arrays syntax was introduced in PHP>=5.4, so in lower versions that will be

if(in_array($intMultiFun, array('a', 'b', 'c', 'd')))
{
   //handle a function
}

Edit

If functions would be different, then you should hold them in array, like:

$rgFunctions = ['a'=>'funcA', 'b'=>'funcB', 'c'=>'funcC', 'd'=>'funcD'];
if(array_key_exists($intMultiFun, $rgFunctions) &&
   function_exists($rgFunctions[$intMultiFun]))
{
   $mResult = call_user_func($rgFunctions[$intMultiFun]);
}