<?php
if (!isset($_REQUEST['base']) || !isset($_REQUEST['exponent'])) {
header("HTTP/1.1 400 Bad Request");
header("Content-type: text/plain");
echo "Error: you must pass both 'base' and 'exponent' parameters.";
} else {
header("Content-type: text/plain");
$base = $_REQUEST["base"];
$exp = $_REQUEST["exponent"];
$result = pow($base, $exp);
print $result;
}
?>