1.新建工程

打开PhpStorm新建工程如下：

打开终端输入如下命令安装selenium：

composer require php-webdriver/webdriver

2.编写代码

<?php
require 'vendor/autoload.php';

use Facebook\WebDriver\Remote\RemoteWebDriver;
use Facebook\WebDriver\Remote\DesiredCapabilities;
use Facebook\WebDriver\WebDriverBy;

class BaiduTest
{
    public function runTest()
    {
        $serverUrl = 'http://localhost:4444';
        $driver = RemoteWebDriver::create($serverUrl, DesiredCapabilities::chrome());
        sleep(3);
        try {
            $driver->get('https://www.baidu.com');
            $searchBox = $driver->findElement(WebDriverBy::id('kw'));
            $searchBox->sendKeys('Hello');
            sleep(2);
            $searchButton = $driver->findElement(WebDriverBy::id("su"));
            $searchButton->click();
        } finally {
            $driver->quit();
        }
    }
}

$test = new BaiduTest();
$test->runTest();

运行之前先开启一个终端执行：

chromedriver --port=4444