// add a relationship between a creature and a skill with a bonus value,
// update bonus value if relationship already exists
class ajaxRequest
{
    function addCreatureSkill()
    {
        require 'Mize_connect.php';
        $mysqli = Mize_server();
        if ($mysqli->connect_errno) {
            echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;
            exit;
        }
        $creature = (string) htmlspecialchars($_POST['cs_creature']);
        $skill = (string) htmlspecialchars($_POST['cs_skill']);
        $bonus = (string) htmlspecialchars($_POST['cs_bonus']);
        $return = array();
        $return['creature'] = $creature;
        $return['skill'] = $skill;
        $return['bonus'] = $bonus;
        if (count($_POST) > 0) {
            $stmt = $mysqli->prepare("INSERT INTO mm_c_skills (creature_id, skill_id, bonus)\n\t\t\t\t\t\t\t\t\t\t  VALUES\n\t\t\t\t\t\t\t\t\t\t\t((SELECT id FROM mm_creatures WHERE name= ?),\n\t\t\t\t\t\t\t\t\t\t\t (SELECT id FROM mm_skills WHERE name= ?),\n\t\t\t\t\t\t\t\t\t\t\t  ?)\n\t\t\t\t\t\t\t\t\t\t\t  ON DUPLICATE KEY UPDATE bonus = ?");
            $stmt->bind_param("ssdd", $creature, $skill, $bonus, $bonus);
            $stmt->execute();
            $stmt->close();
        }
        return json_encode($return);
    }
}
$ajaxRequest = new ajaxRequest();
echo $ajaxRequest->addCreatureSkill();