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)

<?php namespace 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-agent page.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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