Introduction

Arrays are lists

$message[0] = " You are standing in a room";
$message[1] = " You climb the wall";

if $input = "climb" {
echo $message[1];
}

or

$inventory = array("key", "gun", "torch", "sword");

if (in_array("torch",$inventory))
{
   echo "You can see in the dark";
}

or

$inventory = array("key", "gun", "torch", "sword");

echo "Your third object is a " . $inventory[2]; // remember we start with [0]