欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  后端开发

php如何调用phantomJS截图

程序员文章站 2022-03-07 22:58:07
...
php如何调用phantomJS截图

推荐:《PHP视频教程

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);
});

以上就是php如何调用phantomJS截图的详细内容,更多请关注其它相关文章!

相关标签: php phantomJS