php function name case sensitive? code example

Example 1: is switch case case sensitive in php

<?php
$smart = "cRikEy";

switch (strtolower($smart)) {
     case "crikey": // Note the lowercase chars
         echo "Crikey";
         break;
     case "hund":
         echo "Hund";
         break;
     case "kat":
         echo "Kat";
         break;
     default:
         echo "Alt Andet";
}
?>

Example 2: is php a case sensitive language?

PHP is partially case sensitive. The variable names are case-sensitive but function names are not.