api_base.php

<?php

class Request {
    public $url_elements;
    public $verb;
    public $parameters;
    public $path_info;
    public function __construct() {
        $this->verb = $_SERVER['REQUEST_METHOD'];
	$this->path_info = $_SERVER['PATH_INFO'];
        $this->url_elements = preg_split('@/@', $_SERVER['PATH_INFO'], NULL, PREG_SPLIT_NO_EMPTY);
	$this->parseIncomingParams();
        // initialise json as default format
        $this->format = 'json';
        if(isset($this->parameters['format'])) {
            $this->format = $this->parameters['format'];
        }
        return true;
    }

    public function parseIncomingParams() {
        $parameters = array();

        // first of all, pull the GET vars
        if (isset($_SERVER['QUERY_STRING'])) {
            parse_str($_SERVER['QUERY_STRING'], $parameters);
        }

        // now how about PUT/POST bodies? These override what we got from GET
        $body = file_get_contents("php://input");
        $content_type = false;
        if(isset($_SERVER['CONTENT_TYPE'])) {
            $content_type = $_SERVER['CONTENT_TYPE'];
        }
        switch($content_type) {
            case "application/json":
                $body_params = json_decode($body);
                if($body_params) {
                    foreach($body_params as $param_name => $param_value) {
                        $parameters[$param_name] = $param_value;
                    }
                }
                $this->format = "json";
                break;
            case "application/x-www-form-urlencoded":
                parse_str($body, $postvars);
                foreach($postvars as $field => $value) {
                    $parameters[$field] = $value;

                }
                $this->format = "html";
                break;
            default:
                // we could parse other supported formats here
                break;
        }
        $this->parameters = $parameters;
    }
/*
    // route the request to the right place
	$controller_name = ucfirst($url_elements[1]) . 'Controller';
	if (class_exists($controller_name)) {
	    $controller = new $controller_name();
	    $action_name = strtolower($verb) . 'Action';
	    $result = $controller->$action_name();
	    print_r($result);
	}
*/
}