<?
/** 
* Access the HTTP Request 
*/  
class http_request {  
  
    /** additional HTTP headers not prefixed with HTTP_ in $_SERVER superglobal */  
    var $add_headers = array('CONTENT_TYPE', 'CONTENT_LENGTH');  
  
    /** 
    * Construtor 
    * Retrieve HTTP Body 
    * @param Array Additional Headers to retrieve 
    */  
    function http_request($add_headers = false) {  
      
        $this->retrieve_headers($add_headers);  
        $this->body = @file_get_contents('php://input');  
    }  
      
    /** 
    * Retrieve the HTTP request headers from the $_SERVER superglobal 
    * @param Array Additional Headers to retrieve 
    */  
    function retrieve_headers($add_headers = false) {  
          
        if ($add_headers) {  
            $this->add_headers = array_merge($this->add_headers, $add_headers);  
        }  
      
        if (isset($_SERVER['HTTP_METHOD'])) {  
            $this->method = $_SERVER['HTTP_METHOD'];  
            unset($_SERVER['HTTP_METHOD']);  
        } else {  
            $this->method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;  
        }  
        $this->protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : false;  
        $this->request_method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;  
          
        $this->headers = array();  
        foreach($_SERVER as $i=>$val) {  
            if (strpos($i, 'HTTP_') === 0 || in_array($i, $this->add_headers)) {  
                $name = str_replace(array('HTTP_', '_'), array('', '-'), $i);  
                $this->headers[$name] = $val;  
            }  
        }  
    }  
      
    /**  
    * Retrieve HTTP Method 
    */  
    function method() {  
        return $this->method;  
    }  
      
    /**  
    * Retrieve HTTP Body 
    */  
    function body() {  
        return $this->body;  
    }  
      
    /**  
    * Retrieve an HTTP Header 
    * @param string Case-Insensitive HTTP Header Name (eg: "User-Agent") 
    */  
    function header($name) {  
        $name = strtoupper($name);  
        return isset($this->headers[$name]) ? $this->headers[$name] : false;  
    }  
      
    /** 
    * Retrieve all HTTP Headers  
    * @return array HTTP Headers 
    */  
    function headers() {  
        return $this->headers;  
    }  
      
    /** 
    * Return Raw HTTP Request (note: This is incomplete) 
    * @param bool ReBuild the Raw HTTP Request 
    */  
    function raw($refresh = false) {  
      
        if (isset($this->raw) && !$refresh) {  
            return $this->raw; // return cached  
        }  
      
        $headers = $this->headers();  
        $this->raw = "{$this->method}\r\n";  
          
        foreach($headers as $i=>$header) {  
                $this->raw .= "$i: $header\r\n";  
        }  
          
        $this->raw .= "\r\n{$this->body}";  
          
        return $this->raw;  
    }  
  
}  
?>