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extend/WxCrawler.php

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+<?php
+namespace extend;
+/**
+ * 微信公众号⽂章爬取类
+ */
+class WxCrawler
+{
+    //微信内容div正则
+    private $wxContentDiv = "/id=\"js_content\" style=\"visibility: hidden;\">(.*)<\/div>/iUs";
+    //微信图⽚样式
+    private $imageStyle = 'style="max-width: 100%;height:auto"';
+
+    /**
+     * 爬取内容
+     * @param  $url
+     * @return false|string
+     * @author bignerd
+     * @since  2016-08-16T10:13:58+0800
+     */
+    private function _get($url)
+    {
+        return file_get_contents($url);
+    }
+
+    public function crawByUrl($url)
+    {
+        $content = $this->_get($url);
+
+        if(empty($content)){
+            return  error(-1, '⽂章不存在');
+
+        }
+        $basicInfo = $this->articleBasicInfo($content);
+        $content_result = $this->contentHandle($content);
+        if(!empty($content_result['code']) && $content_result['code'] < 0){
+            return $content_result;
+        }
+        list($content_html, $content_text) = $content_result;
+        return success(0,'',array_merge($basicInfo, ['content_html' => $content_html, 'content_text' => $content_text]));
+    }
+
+    /**
+     * 处理微信⽂章源码，提取⽂章主体，处理图⽚链接
+     * @author bignerd
+     * @since  2016-08-16T15:59:27+0800
+     * @param  $content 抓取的微信⽂章源码
+     * @return [带图html⽂本，⽆图html⽂本]
+     */
+    private function contentHandle($content)
+    {
+        $content_html_pattern = $this->wxContentDiv;
+        preg_match_all($content_html_pattern, $content, $html_matchs);
+        if (empty(array_filter($html_matchs))) {
+            return  error(-1, '⽂章不存在');
+        }
+        $content_html = $html_matchs[1][0];
+//        $content_html = "<div id='js_content'>".$content_html;
+        $content_html = "<style>img{max-width:100% !important;height:auto !important}</style>".$content_html;
+        $content_html = str_replace("preview.html","player.html",$content_html);
+        //去除掉hidden隐藏
+//        $content_html = str_replace('style="visibility: hidden;"', '', $content_html);
+        //过滤掉iframe
+//        $content_html = preg_replace('/<iframe(.*?)<\/iframe>/', '', $content_html);
+//		$content_html = preg_replace('/<iframe(.*?)<\/iframe>/', '', $content_html);
+        $path = 'article/';
+        /** @var  带图⽚html⽂本 */
+        $content_html = preg_replace_callback('/data-src="(.*?)"/', function ($matches) use ($path) {
+            return 'src="' . img($this->getImg($matches[1])) . '" ' ;
+        }, $content_html);
+        //添加微信样式
+//        $content_html = '<div style="max-width: 677px;margin-left: auto;margin-right: auto;">' . $content_html . '</div>';
+        /** @var  ⽆图html⽂本 */
+        $content_text = preg_replace('/<img.*?>/s', '', $content_html);
+        return [$content_html, $content_text];
+    }
+
+    /**
+     * 获取⽂章的基本信息
+     * @author bignerd
+     * @since  2016-08-16T17:16:32+0800
+     * @param  $content ⽂章详情源码
+     * @return $basicInfo
+     */
+    private function articleBasicInfo($content)
+    {
+        //待获取item
+        $item = [
+            'ct' => 'date',//发布时间
+            'msg_title' => 'title',//标题
+            'msg_desc' => 'digest',//描述
+            'msg_link' => 'content_url',//⽂章链接
+            'msg_cdn_url' => 'cover',//封⾯图⽚链接
+            'nickname' => 'wechatname',//公众号名称
+        ];
+        $basicInfo = [
+            'author' => '',
+            'copyright_stat' => '',
+        ];
+        foreach ($item as $k => $v) {
+            if ($k == 'msg_title')
+                $pattern = '/var ' . $k . ' = \'(.*?)\'\.html\(false\);/s';
+            else
+                $pattern = '/var ' . $k . ' = "\'(.*?)\'";/s';
+            preg_match_all($pattern, $content, $matches);
+            if (array_key_exists(1, $matches) && !empty($matches[1][0])) {
+                $basicInfo[$v] = trim($this->htmlTransform($matches[1][0]));
+            } else {
+                $basicInfo[$v] = '';
+            }
+        }
+
+//  // 获取作者
+//  preg_match('/<em class="rich_media_meta rich_media_meta_text">(.*?)<\/em>/s', $content, $matchAuthor);
+//  if(!empty($matchAuthor[1])) $basicInfo['author'] = $matchAuthor[1];
+//  // ⽂章类型
+//  preg_match('/<span id="copyright_logo" class="rich_media_meta meta_original_tag">(.*?)<\/span>/s', $content, $matchType);
+//  if(!empty($matchType[1])) $basicInfo['copyright_stat'] = $matchType[1];
+        return $basicInfo;
+    }
+
+    /**
+     * 特殊字符转换
+     * @author bignerd
+     * @since  2016-08-16T17:30:52+0800
+     * @param  $string
+     * @return $string
+     */
+    private function htmlTransform($string)
+    {
+        $string = str_replace('&quot;', '"', $string);
+        $string = str_replace('&amp;', '&', $string);
+        $string = str_replace('amp;', '', $string);
+        $string = str_replace('&lt;', '<', $string);
+        $string = str_replace('&gt;', '>', $string);
+        $string = str_replace('&nbsp;', ' ', $string);
+        $string = str_replace("\\", '', $string);
+        return $string;
+    }
+
+    /**
+     * @param $url
+     * @return string
+     */
+    private function getImg($url)
+    {
+
+        $upload_model = new \app\model\upload\Upload();
+        $path = 'common/article/' . date('Ymd') . '/';
+
+        $result = $upload_model->setPath($path)->remotePull($url);
+
+        return $result['data']['pic_path'] ?? '';
+
+//        $refer = "http://www.qq.com/";
+//        $opt = [
+//            'http' => [
+//                'header' => "Referer: " . $refer
+//            ]
+//        ];
+//        $context = stream_context_create($opt);
+//        //接受数据流
+//        $file_contents = file_get_contents($url, false, $context);
+//        $imageSteam = Imagecreatefromstring($file_contents);
+//        $path = __UPLOAD__.'article/';
+//        if (!file_exists($path))
+//            mkdir($path, 0777, true);
+//        $fileName = time() . rand(0, 99999) . '.jpg';
+//        //⽣成新图⽚
+//        imagejpeg($imageSteam, $path . $fileName);
+//        return $fileName;
+    }
+}
+