Selenium-webdriver dropdownlist not work php - php

Question

I want to choose one first drop-down list, then the second, but I can not even cope with the first
Please explain why I get the error
<?php
require_once "phpwebdriver/WebDriver.php";
$webdriver = new WebDriver("localhost", "4444");
$webdriver->connect("firefox");
$webdriver->get("http://namami.org/PKstate.aspx");
//$element = $webdriver->findElement('css selector', 'select[id="DdlState"] option[value="Assam"]');
$element = $webdriver->findElement("css selector", 'select[id="DdlState"] option[value="Assam"]')->click();
//$element=$webdriver->findElement(By.cssSelector("#DdlState")).click();
//$element->‌​click();
$webdriver->close();
?>
Fatal error: Call to undefined method WebDriver::findElement() in C:\xampp\htdocs\temp\1.php on line 7
I could not find an answer. Use XAMPP.
I would be grateful for your help.
Regards Anton

Answer 1

You most likely need to delay the click.
The item that you're attempting to grab with Selenium is generated by Javascript, and I think what's happening is that the Selenium is trying to find something that isn't quite rendered yet.
Try calling
sleep(1); to delay the Selenium action and see if that works:
<?php
require_once "phpwebdriver/WebDriver.php";
$webdriver = new WebDriver("localhost", "4444");
$webdriver->connect("firefox");
$webdriver->get("http://namami.org/PKstate.aspx");
sleep(1); // allow the javascript some time to load
//$element = $webdriver->findElement('css selector', 'select[id="DdlState"] option[value="Assam"]');
//$element = $webdriver->findElement("css selector", 'select[id="DdlState"] option[value="Assam"]')->click();
////$element=$webdriver->findElement(By.cssSelector("#DdlState")).click();
////$element->‌​click();
//$webdriver->close();
//?>

Answer 2

<?php
require_once "phpwebdriver/WebDriver.php";
$webdriver = new WebDriver("localhost", "4444");
$webdriver->connect("firefox");
$webdriver->get("http://namami.org/PKstate.aspx");
sleep(1); // allow the javascript some time to load
$element = $webdriver->findElement('id', 'DdlState');
$select = new Select($element);
$select->selectByValue("Assam");
//?>