PHP RESTful API Example

<?php

function readUsers() {
    echo 1;
}
function readComments() {
    echo 2;
}
function handleDefaultAction() {
    echo 3;
}
function createUser($a) {
    echo $a;
}
function createComment($a) {
    echo $a;
}
function updateUser($a) {
    echo $a;
}
function updateComment($a) {
    echo $a;
}
function deleteUser($a) {
    echo $a;
}
function deleteComment($a) {
    echo $a;
}

switch ($_SERVER['REQUEST_METHOD']) {
    case 'GET' :
        switch ($_GET['action']) {
            case 'users' : getUsers(); break;
            case 'comments' : getComments(); break;
            default : handleDefaultAction(); break;
        }
        break;
    case 'POST' :
        switch ($_POST['action']) {
            case 'user' : createUser($_POST['uname'],$_POST['uemail']); break;
            case 'comment' : createComment($_POST['cbody'],$_POST['uname']); break;
            default : handleDefaultAction(); break;
        }
        break;
    case 'PUT' :
        parse_str(file_get_contents("php://input"),$_PUT);
        switch ($_PUT['action']) {
            case 'user' : updateUser($_PUT['uname'],$_PUT['uemail']); break;
            case 'comment' : updateComment($_PUT['cbody'],$_PUT['uname']); break;
            default : handleDefaultAction();
        }
        break;
    case 'DELETE' :
        parse_str(file_get_contents("php://input"),$_DELETE);
        switch ($_DELETE['action']) {
            case 'user' : deleteUser($_DELETE['uname']); break;
            case 'comment' : deleteComment($_DELETE['cid']); break;
            default : handleDefaultAction(); break;
        }
        break;
    default : echo 0; break;
}

echo "\n";