Minimal PHP CouchDB Layer

couch.php

<?
/*
 *	Usage:	
 *  Instantiate class $c = couch::i();
 *	You can now use $c to make calls
 */
class couch
{
    private static $instance = null;
    private $curl_object = null;
    private $domain = ''; #Your Domain
    private $port = '5984'; #Default Port
    private $database = ''; #Database
    private $username = ''; #Username
    private $password = ''; #Password
    public static function i(){
        if(self::$instance === null)
            self::$instance = new self;
        return self::$instance;            
    }
    public function make_call($url,$method,$message) {
            $t_url = $this->username':'.$this->password.'@'.$this->domain.':'.$this->port.'/'.$this->database.'/'.$url;
            curl_setopt($this->curl_object, CURLOPT_URL,$t_url);
            curl_setopt($this->curl_object, CURLOPT_CUSTOMREQUEST, $method);
            curl_setopt($this->curl_object, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($this->curl_object, CURLOPT_POSTFIELDS, $message);
            curl_setopt($this->curl_object, CURLOPT_HTTPHEADER,array('Content-Type: application/json; charset=utf-8'));
            $result=curl_exec ($this->curl_object);
            $result = json_decode($result,false);       
            return $result;
    }
    public function do_put($url,$message=array()){
        return $this->make_call($url,"PUT",$message);
    }
    public function do_post($url,$message=array()){
        return $this->make_call($url,"POST",$message);
    }
    public function do_get($url,$message=array()){
        return $this->make_call($url,"GET",$message);
    }
    public function do_delete($url,$message=array()){
        return $this->make_call($url,"DELETE",$message);
    }
    private function __construct(){
        $this->curl_object=curl_init();
    }
    private function __clone(){}
}
?>