XMLRPClientWordPress.php

class XMLRPClientWordPress  
{  
	var $XMLRPCURL = "http://www.mysite.com/xmlrpc.php";  
	var $UserName  = "username";  
	var $PassWord = "password"; 

	// Constructor  
	public function __construct($xmlrpcurl, $username, $password)   
	{  
		$this->XMLRPCURL = $xmlrpcurl;  
		$this->UserName  = $username;  
		$this->PassWord = $password;  
	}  

	// send request function
	function send_request($requestname, $params)  
	{  
		$request = xmlrpc_encode_request($requestname, $params);  
		$ch = curl_init();  
		curl_setopt($ch, CURLOPT_POSTFIELDS, $request);  
		curl_setopt($ch, CURLOPT_URL, $this->XMLRPCURL);  
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  
		curl_setopt($ch, CURLOPT_TIMEOUT, 1);  
		$results = curl_exec($ch);  
		curl_close($ch);  
		return $results;  
	}  

	// say hello check

	function sayHello()  
	{  
		$params = array();  
		return $this->send_request('demo.sayHello',$params);  
	}  
}
$objXMLRPClientWordPress = new XMLRPClientWordPress  ("http://example.com/xmlrpc.php" , "username" , "password");  

echo $objXMLRPClientWordPress->sayHello();

How a sayHello request can be made without username and password