Selenium PHPwebdriver中的selenium.remote.Response [status] => 13

I am new to selenium testing. I downloaded selenium php binding named PHP by Chibimagic from Selenium Hq. My problem is when running the simple example code provided by the website, i am getting an error in my php_error_log file

[20-Apr-2015 15:41:37 Asia/Calcutta] PHP Fatal error:  Uncaught exception 'WebDriverException' with message '13' in C:\xampp\htdocs\my-work\sele\phpwebdriver\WebDriverBase.php:130
Stack trace:<br>
 C:\xampp\htdocs\my-work\sele\phpwebdriver\WebDriverBase.php(170): WebDriverBase->handleResponse(Object(stdClass))<br>
C:\xampp\htdocs\my-work\sele\example.php(24): WebDriverBase->findElementBy('name', 'q')
{main}
 thrown in C:\xampp\htdocs\my-work\sele\phpwebdriver\WebDriverBase.php on line 130

my code is

require_once "phpwebdriver/WebDriver.php";
$webdriver = new WebDriver("localhost", "4444");
$webdriver->connect("firefox");                            
$webdriver->get("http://www.google.co.in");
$element = $webdriver->findElementBy(LocatorStrategy::name, "q");
if ($element) {
$element->sendKeys(array("php webdriver" ) );
$element->submit();
}
$webdriver->close();

and the display on webpage is

stdClass Object ( [state] => unhandled error [sessionId] => [hCode] =>          32124297 [value] => stdClass Object ( [additionalInformation] => Driver info: driver.version: unknown [localizedMessage] => POST /session//element Build info: version: '2.45.0', revision: '5017cb8', time: '2015-02-26 23:59:50' System info: host: 'admin', ip: '192.168.1.16', os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.8.0_40' Driver info: driver.version: unknown [supportUrl] => [systemInformation] => System info: host: 'admin', ip: '192.168.1.16', os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.8.0_40' [cause] => [stackTrace] => Array ( [0] => [1] => [2] => [3] => [4] => [5] => [6] => [7] => [8] => [9] => [10] => [11] => [12] => [13] => [14] => [15] => [16] => [17] => [18] => ) [suppressed] => Array ( ) [message] => POST /session//element Build info: version: '2.45.0', revision: '5017cb8', time: '2015-02-26 23:59:50' System info: host: 'admin', ip: '192.168.1.16', os.name: 'Windows XP', os.arch: 'x86', os.version: '5.1', java.version: '1.8.0_40' Driver info: driver.version: unknown [hCode] => 20849676 [class] => org.openqa.selenium.UnsupportedCommandException [buildInformation] => ) [class] => org.openqa.selenium.remote.Response [status] => 13 )

The error is coming because of version mismatch. Degrade the firefox version to 29.0 to make it compatible to selenium-server-standalone-2.42.2.

This works for me.