正則匹配div中的a標記的href 和content
阿新 • • 發佈：2019-02-16
很久後又一次接觸正則，那種似曾相似的感覺，你是不是也有這樣的感覺，這麼小CASE的東西，我一定要把他徹底掌握了，於是花時間看手冊，於是就明白了，於是下次又是似曾相似……
總寫下今天用到的地方：
//demo
$str = '<div class="test"> <div class="wcb"><li>li</li> <a href="m.vip.com/shoe/47">跑步鞋</a> <a href="m.vip.com/shoe/48">籃球鞋</a> </div> <div class="wcb">tryagin</div> </div>'; // 先匹配出DIV preg_match_all('/<div class=\"wcb\">(.*?)<\/div>/i', $str, $matches); if(!empty($matches)) { $target_content = $matches[0][0]; } //第二次匹配出其中的a標記，注意()是返回匹配的內容 preg_match_all('/<a href=\"((?!\/topic\/show).[^<]*)\">(.*?)<\/a>/i', $target_content, $matches_detail); if(!empty($matches_detail)) { $href_content = $matches_detail[1]; $detail_content = $matches_detail[2]; }
方法：
/** * function: 獲取主題館資料 * * @param string $topic 主題名 * @param string $pattern 正則模式 * * @return array $data $data['href_content']:連結資訊陣列；$data['detail_content']：名稱資訊陣列 */ private function get_topic_data($topic, $pattern1, $pattern2) { $data = array(); if( empty($topic) || empty($pattern1) || empty($pattern2)) { return $data; } // 構建主題館資料 // 獲取整體資料 // 獲取頁面ID $modpage_id = 0; $modpages = $this->Modpage_Model->getAllPages(); foreach($modpages as $one_page) { if ($one_page['department'] == $topic) { $modpage_id = $one_page['id']; } } // 取資訊 $version_data = $this->Modpage_Model->getCurrentPageVersion($modpage_id); $page_info_raw = $this->Modpage_Model->getVersionData($modpage_id, $version_data['version']); // 生成資料 foreach ($page_info_raw as $k => $v) { //兒童單獨處理 if($topic == 'children') { if($v['module_id'] == 1 && $v['desc'] == '快速找寶貝') { $parse_str = $v['content']; break; } } else { // 去後臺副導航資料 if($v['module_id'] == 4) { $parse_str = $v['content']; break; } } } // 匹配主題館需要的資料 // 清洗資料 $parse_str = $this -> clearData($parse_str); preg_match_all($pattern1, $parse_str, $matches); if(!empty($matches)) { $target_content = $matches[0][0]; } // 替換主機名 $target_content = str_replace($this -> website, TOUCH_URL, $target_content); // 清洗資料 $target_content = $this -> clearData($target_content); preg_match_all($pattern2, $target_content, $matches_detail); if(!empty($matches_detail)) { $data['href_content'] = $matches_detail[1]; $data['detail_content'] = $matches_detail[2]; } return $data; } /** * function: 清洗資料（過濾字串中的換行符、製表符） * * @param string $str 初始字串 * * @return string $str */ private function clearData( $str ) { if( empty($str) ) { return ''; } // 清除換行符 $str = str_replace("\r\n", '', $str); // 清除換行符 $str = str_replace("\n", '', $str); // 清除製表符 $str = str_replace("\t", '', $str); $str = trim( $str ); return $str; }
//測試方法
應用場景：/** * 首頁入口 * */ public function index() { $data = array(); $result = array(); // 獲取主題館資訊 // 主題館原始資料 array('部門'=>array('型別','正則一','正則二')) $topic_name_arr = array( 'sports' => array('sport','/<div class=\"spnavdiv\">(.*?)<\/div>/i','/<a target="_blank" href=\"((?!\/topic\/show).[^<]*)\">(.*?)<\/a>/i'), 'womenshoes' => array('women','/<div class=\"OB_floatL\">(.*?)<\/div>/i','/<a href=\"((?!\/topic\/show).[^<]*)\" .*?>(.*?)<\/a>/i'), 'menshoes' => array('man','/<div class=\"OB_floatL\" .*?>(.*?)<\/div>/i','/<a target="_blank" href=\"((?!\/topic\/show).[^<]*)\">(.*?)<\/a>/i'), 'outdoor' => array('outdoor','/<div class=\"navlidiv\" style=\".*?\">(.*?)<\/div>/i','/<a href=\"((?!\/topic\/show).[^<]*)\" target="_blank" .*?>(.*?)<\/a>/i'), 'children' => array('children','/<table class=\"catetable_2\">(.*?)<\/div>/i','/<a href=\"((?!\/topic\/show).[^<]*)\" target="_blank">(.*?)<\/a>/i'), ); // 組織資料 foreach ($topic_name_arr as $type => $pattern) { $result = $this -> get_topic_data( $type, $pattern[1], $pattern[2] ); $data['data'][$pattern[0]] = $result; } $h_data['jspath'] = 'index'; $this->load->view("touch/common/header",$h_data); $this->load->view("touch/index/index",$data); $this->load->view("touch/common/footer"); }
<div class="navsubmenu" style="width:280px;left:0"> <span class="arr" style="left:30px;"></span>
<div class="OB_floatL" style="margin-right:30px">
<h5 class="subh5">全部男鞋</h5>
<p><a target="_blank" href="http://m.vip.com/shoe/167"class="hot">休閒鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/165">正裝鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/166" class="hot">商務鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/170">涼鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/173">戶外鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/172">帆布鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/171">板鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/168" class="hot">男靴</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/351">棉鞋</a></p>
</div>
<div class="OB_floatL" style="margin-right:30px">
<h5 class="subh5">熱門品類</h5>
<p><a target="_blank" href="http://m.vip.com/topic/show/8049" class="hot">1月新品</a></p>
<p><a target="_blank" href="http://m.vip.com/search?top_key=%E5%B7%A5%E8%A3%85%E9%9E%8B&new_cat=164" class="hot">工裝鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/search?top_key=%E7%89%9B%E6%B4%A5%E9%9E%8B&new_cat=164">牛津鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/168">男靴</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/167-11v1585">伐木鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/search?top_key=%E5%B8%86%E8%88%B9%E9%9E%8B&new_cat=164">帆船鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/166">商務皮鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/shoe/166-16v243">增高鞋</a></p>
<p><a target="_blank" href="http://m.vip.com/search?gender=1&top_key=%E5%86%9B%E8%AD%A6%E9%9D%B4">軍警靴</a></p>
</div>
</div>PS:
preg快速檢視地址：http://msdn.microsoft.com/zh-cn/library/ae5bf541(v=vs.80).aspx
小結：這是最笨，但是最快解決問題的方法
參考遞迴實現：http://zhidao.baidu.com/link?url=WYgzZnK-_kD_ooBmH3iALiPniS054Ympziofk0nX1B6Nywy1cPjGfnhSp3PaQ95qw_rEOG-E_GX3t4YFvtQeja
總結：
（）可以返回匹配到的內容