php如何调用phantomJS截图【PHP教程】

概述php如何调用phantomJS截图

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PHP调用phantomJs截图

知识储备

*unix系统安装phantomJs,权限相关知识

基本JavaScript语法知识

PHP exec函数调用REPL phantomJs

phantomJs Js截图文档 http://JavaScript.ruanyifeng.com/tool/phantomJs.HTML

代码(PHP 代码环境为yii2框架)

<?PHPnamespace weapp\\library\\phantomJs;use weapp\\library\\BizException;class ScreenShot{    /** @var string 获取phantomJs 参数中 Js文件的决定路径 */    private $Js_path;    /** @var bool|string 获取PHP 有777权限的临时文件目录 */    private $temp_dir;    function __construct()    {        $dir = __DIR__;        $this->Js_path = "{$dir}/script.Js";        /** @var bool|string 获取PHP 有777权限的临时文件目录 */        $this->temp_dir = \\Yii::getAlias('@runtime');    }    /**     * 截图并上传     * @param string $url     * @param string $filename     * @return string     * @throws BizException     */    public function screenShotthenSavetoOss(string $url, string $filename = 'temp.jpg')    {        //输出图片的路径        $outputfilePath = "{$this->temp_dir}/$filename";        //执行的phantomJs命令        //phantomJs 可执行文件必须是 绝对路径 否则导致 exec 函数返回值127错误        $cmd = "\\usr\\local\\bin\\phantomJs {$this->Js_path} '$url' '$outputfilePath'";        //捕捉不到phantomJs命令输出结果        exec($cmd, $output);        //检查截图文件是否存在        $isShotimgaeExist = file_exists($outputfilePath);        if (!$isShotimgaeExist) {            throw new BizException(0, 'phantomJs截图失败', BizException::SELF_define);        }        //保存截图到oss        $result = $this->postscreenShotimageToOss($outputfilePath);        //删除临时文件夹的截图图片        unlink($outputfilePath);        return $result;    }    /**     * 上传截图到阿里云直传oss     * @param string $screenshot_path     * @return string     */    public function postscreenShotimageToOss(string $screenshot_path): string    {        $ossKey = 'raw_file_name';        $file = new \\CURLfile($screenshot_path, 'image/jpeg', 'file');        $tokenArray = $this->getosspolicyToken('fetch');        $url = $tokenArray->host;        $postData = [            'key' => "{$tokenArray->dir}/$ossKey",            'policy' => $tokenArray->policy,            'OSSAccessKeyID' => $tokenArray->accessID,            'success_action_status' => '200',            'signature' => $tokenArray->signature,            'callback' => $tokenArray->callback,            'file' => $file        ];        $ch = curl_init();        //$data = array('name' => 'Foo', 'file' => '@/home/user/test.png');        curl_setopt($ch, CURLOPT_URL, $url);        // disable SSL verification        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);        curl_setopt($ch, CURLOPT_POST, 1);        curl_setopt($ch, CURLOPT_SAFE_UPLOAD, true); // required as of PHP 5.6.0        curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);        curl_setopt($ch, CURLOPT_TIMEOUT, 20);        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);        //curl_setopt($ch, CURLOPT_httpheader, ["Content-Type: $mime_type"]);        $res = curl_exec($ch);        $res = Json_decode($res);        curl_close($ch);        if (empty($res) || $res->code != 0) {            return '';        } else {            return $res->data->url;        }    }    /**     * 调用管理后台阿里云oss token接口     * @param null $url     * @return array     */    public function getosspolicyToken($url = null)    {        $url = \\Yii::$app->params['oss_screen_shot_token_API'];        $ch = curl_init();        // disable SSL verification        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);        // Will return the response, if false it print the response        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);        // Set the url        curl_setopt($ch, CURLOPT_URL, $url);        // Execute        $result = curl_exec($ch);        // Closing        curl_close($ch);        $res = Json_decode($result);        if (empty($res) || $res->code != 0) {            return [];        } else {            return $res->data;        }    }}phantomJs JavaScript脚本内容"use strict";var system = require('system');var webPage = require('webpage');var page = webPage.create();//设置phantomJs的浏览器user-agentpage.settings.userAgent = 'Mozilla/5.0 (iPhone; cpu iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1';//获取PHP exec 函数的命令行参数if (system.args.length !== 3) {    console.log(system.args);    console.log('参数错误');    console.log('第2个参数为URL地址 第3个参数为截图文件名称');    phantom.exit(1);}//命令行 截图网址参数var url = system.args[1];//图片输出路径var filePath = system.args[2];console.log('-------');console.log(url);console.log('-------');console.log(filePath);console.log('-------');//设置浏览器视口page.vIEwportSize = {wIDth: 480, height: 960};//打开网址page.open(url, function start(status) {    //1000ms之后开始截图    setTimeout(function () {        //截图格式为jpg 80%的图片质量        page.render(filePath, {format: 'jpg', quality: '80'});        console.log('success');        //退出phantomJs 避免phantomJs导致内存泄露        phantom.exit();    }, 1000);});

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