In PHP, variable names are case sensitive. code example
Example: 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";
}
?>