> 有时候有些列表页使用的是滚动条到最底部才加载下一页的数据，这个时候就需要用到selenium来操作这样的数据。我们拿letv的分页来做测试。
~~~
<?php
namespace Facebook\WebDriver;
use Facebook\WebDriver\Remote\DesiredCapabilities;
use Facebook\WebDriver\Remote\RemoteWebDriver;
require_once('vendor/autoload.php');
header("Content-Type: text/html; charset=UTF-8");
// start Firefox with 5 second timeout
$host = 'http://localhost:4444/wd/hub'; // this is the default
$capabilities = DesiredCapabilities::chrome();
$driver = RemoteWebDriver::create($host, $capabilities, 5000);
$driver->manage()->timeouts()->implicitlyWait(15); //隐性设置15秒
$driver->get('http://list.le.com/listn/c1_t-1_a50071_y-1_s1_lg-1_ph-1_md_o4_d1_p.html');
//翻一页
js = "window.scrollTo(0,document.body.scrollHeight)" //滚动至底部
//$js = "window.scrollBy(0,100000000);"; //也可以把值设大一点，达到底部的效果
$driver->executeScript($js);
echo 'sleep...';
sleep(6);
//再翻一页
js = "window.scrollTo(0,document.body.scrollHeight)";
$driver->executeScript($js);
echo 'sleep...';
sleep(6);
//再翻一页
js = "window.scrollTo(0,document.body.scrollHeight)";
$driver->executeScript($js);
echo 'done!';
//关闭浏览器
//$driver->quit();
?>
~~~
