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<?php
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if (!defined('BASEPATH')) exit('No direct script access allowed');
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class Advertise_model extends CI_Model
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{
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function __construct() {
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parent::__construct();
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$this->HT = $this->load->database('HT', TRUE);
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}
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/**
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* function 用于提取指定页面关联的广告
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* $pageurl:需要展示广告的页面url
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* $place: 广告位
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*/
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public function get_advertise_by_url($pageurl, $place = false) {
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//获取当前页面关联的广告
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$data = array();
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$site_code = Site_Code;
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//$site_code = 'gm';
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$ad_list = $this->get_advertise($site_code, $pageurl, $place);
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//尝试根据当前页面的信息ID来提取广告
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//CH统一只用URL查询
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if (empty($ad_list)) {
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$info_detail = $this->get_detail($pageurl);
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if (empty($info_detail)) return array();
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$ad_list = $this->get_advertise($site_code, $pageurl, $place, $info_detail->ic_id);
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}
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//当前页面没有关联广告的话，取父级节点的广告代替
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if (empty($ad_list)) {
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//获取父级信息节点关联的适用于当前页面的广告
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$parent_ads = $this->get_parent_ads($info_detail->is_path, $site_code, time(), $place);
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if (empty($parent_ads)) {
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//url匹配不到数据的话，尝试用父节点的信息内容ic_id来匹配
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$parent_ads = $this->get_parent_ads($info_detail->is_path, $site_code, time(), $place, true);
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}
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if (empty($parent_ads)) return array();
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//重新排序，方便提取直接父节点的广告数据
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$temp = array();
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foreach ($parent_ads as $p) {
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$temp[$p->is_id][] = $p;
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}
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//优先获取直接父节点关联的广告,以此类推
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$is_id_array = explode(',', $info_detail->is_path);
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krsort($is_id_array);
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foreach ($is_id_array as $isid) {
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if ($isid != '' && isset($temp[$isid])) {
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$ad_list = $temp[$isid];
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break;
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}
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}
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}
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//返回当前页面所有广告位的广告，按广告索引
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$advertise = array();
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if (!empty($ad_list)) {
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foreach ($ad_list as $ad) {
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$advertise[$ad->ad_place] = $ad;
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}
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}
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return $advertise;
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}
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//获取指定页面指定位置的广告
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public function get_advertise($site_code, $adp_ic_url, $ad_place = false, $ic_id = false) {
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$adp_ic_url = $ic_id ? $ic_id : $adp_ic_url;
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//当url匹配不到数据的时候该用信息内容ID匹配
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$mapsql = $ad_place == false ? '' : " AND ad_place='$ad_place' ";
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$sql = "SELECT adp_id,
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adp_ic_url,
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adp_forself,
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ad_id,
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ad_is_id,
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ad_title,
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ad_content,
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ad_expire,
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ad_place,
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ad_sitecode,
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ad_status,
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ad_createtime
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FROM infoAdvertise LEFT JOIN infoAdvertisePage ON ad_id=adp_ad_id
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WHERE ad_status=1 AND adp_ic_url='$adp_ic_url' AND ad_sitecode=? AND ad_expire>? $mapsql";
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$query = $this->HT->query($sql, array($site_code, time()));
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//echo '<!--'.$this->HT->last_query().'-->';
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$result = $query->result();
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return $result;
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}
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//获取父级信息节点关联的可以用于子节点的广告
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public function get_parent_ads($path, $site_code, $ad_expire, $ad_place = false, $icid_flag = false) {
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$compare_string = $icid_flag ? 'convert(nvarchar, ic_id)' : 'ic_url';
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//当url匹配不到数据的时候该用信息内容ID匹配
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$path = $path . "0";
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$mapsql = $ad_place == false ? '' : " AND ad_place='$ad_place' ";
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$sql = " SELECT ad_id,
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ad_is_id,
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ad_title,
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ad_content,
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ad_expire,
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ad_place,
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ad_sitecode,
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ad_status,
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ad_createtime,
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is_id
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FROM infoAdvertise
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LEFT JOIN infoAdvertisePage ON ad_id=adp_ad_id
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LEFT JOIN infoContents ON adp_ic_url={$compare_string}
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LEFT JOIN infoStructures ON ic_id=is_ic_id AND is_id in ($path)
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WHERE ad_sitecode=? and is_sitecode=? and ad_status=1 AND (adp_forself=1 or (adp_forself = 3 AND adp_ic_url LIKE {$compare_string})) AND ad_expire>? $mapsql";
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$query = $this->HT->query($sql, array($site_code, $site_code, $ad_expire));
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//echo '<!--' . $this->HT->last_query() . '-->';
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$result = $query->result();
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return $result;
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}
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public function get_detail($url) {
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$sql = "SELECT TOP 1 * FROM infoContents a INNER JOIN infoStructures b ON a.ic_id = b.is_ic_id WHERE ic_url = ? AND ic_status = 1 AND ic_sitecode = 'ah'";
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$query = $this->HT->query($sql, array($url));
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$row = $query->row();
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return $row;
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}
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}
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cyc
8 years ago