如果if语句条件为真，如何声明2个或更多不同的后果？ [关闭]

I would like to have 2 things happen if an if statement condition is met. If isset is true the variable $value will equal 1. The problem is that I also want the value of a session variable $_SESSION['counter'] to increment by 1, but I am unsure of the syntax.

<?php
session_start();

$_SESSION ['counter']=0;

function checkbox_boolean ($name){

if (isset($_POST[$name]))   $slot1 = '1'; $_SESSION['counter']++; else $slot1='0';

}

This will work and its a better solution:

<?php
session_start();

$_SESSION['counter']=0;

function checkbox_boolean ($name){   
   $slot1=0;
  if(isset($_POST[$name])){
     $slot1 = 1;
     $_SESSION['counter']++;
  }

} 
?>