Distance Calculator
0,
"New York" => 648,
"Tokyo" => 6476,
"London" => 4000
);
$ny = array (
"Indianapolis" =>648,
"New York" => 0,
"Tokyo" => 6760,
"London" => 3470
);
$tokyo = array (
"Indianapolis" => 6476,
"New York" => 6760,
"Tokyo" => 0,
"London" => 5956
);
$london = array (
"Indianapolis" => 4000,
"New York" => 3470,
"Tokyo" => 5956,
"London" => 0
);
$distance = array (
"Indianapolis" => $indy,
"New York" => $ny,
"Tokyo" => $tokyo,
"London" => $london
);
$cityA = filter_input(INPUT_POST, "cityA");
$cityB = filter_input(INPUT_POST, "cityB");
$result = $distance[$cityA][$cityB];
print "The distance between $cityA and $cityB is $result miles.
";
?>