搜索及分词效果.可媲美百度
演示地址http://www.microphotons.cn/
一,先在ThinkPHPLibraryVendor目录中安装phpanalysis插件 即WordAnalysis
插件下载地址https://download.csdn.net/download/viqecel/86157012
目录结构如下
二,在搜索控制器中引用插件
Vendor('WordAnalysis.Analysis');
$obj = new WordAnalysisAnalysis();
$soso2= $obj::getKeywords($soso,12);//最多分出12个词
三,搜索代码示例
Vendor('WordAnalysis.Analysis');
$obj = new WordAnalysisAnalysis();
$soso2= $obj::getKeywords($soso,12);//最多分出12个词
$arr = explode(',', $soso2);
if(count($arr)>1 ){//说明多个词
//$this->assign('soso', implode(",", $arr));
$sql='';
//用到合并查询
foreach ($arr as $k => $so) {
$sql.="SELECt `id`,`iss`,`title`,`type`,`isindex`,`xinghao`,price,`price_hidden`,`huohao`,`jscs2`,`description`,`mycontent`,`ctime`,`pic`,`kucun` FROM `tg_contlist`
WHERe ( `title` LIKE '%$so%' OR `xinghao` LIKE '%$so%' OR `huohao` LIKE '%$so%' OR `description` LIKE '%$so%' OR `mycontent` LIKE '%$so%' OR `jscs2` LIKE '%$so%' ) UNIOn ";
}
$sql=rtrim($sql,'UNIOn ');
$sql=$sql.' limit 600 '; //限制最多查询
}else{
//如果只有一个词则按正常搜索,并直接排序
$soso=trim($soso2);
// print_r($soso4);exit;
if(!$soso){
$this->cp_list='';//防止空字符查询
// $this->cp_class_list='';
$this->display();
exit;
}
$sql="SELECt `id`,`iss`,`isindex`,`title`,`price_hidden`,`type`,`xinghao`,price,`huohao`,`jscs2`,`description`,`mycontent`,`ctime`,`pic`,`kucun`,((case when xinghao like '$soso%' then 100 else 0 end)+
(case when xinghao like '%$soso%' then 90 else 0 end)) as xinghaosort,((case when huohao like '$soso%' then 70 else 0 end)+
(case when huohao like '%$soso%' then 60 else 0 end)) as huohaosort,((case when title like '$soso%' then 400 else 0 end)+
(case when title like '%$soso%' then 300 else 0 end)) as titlesort,((case when description like '$soso%' then 50 else 0 end)+
(case when description like '%$soso%' then 45 else 0 end)) as descriptionsort,((case when mycontent like '$soso%' then 40 else 0 end)+
(case when mycontent like '%$soso%' then 35 else 0 end)) as dessort,((case when jscs2 like '$soso%' then 40 else 0 end)+
(case when jscs2 like '%$soso%' then 35 else 0 end)) as jscs2sort FROM `tg_contlist` WHERe ( `title` LIKE '%$soso%' OR `xinghao` LIKE '%$soso%' OR `huohao` LIKE '%$soso%' OR `description` LIKE '%$soso%' OR `mycontent` LIKE '%$soso%' OR `jscs2` LIKE '%$soso%' ) ORDER BY titlesort desc,xinghaosort desc,huohaosort desc,descriptionsort desc,dessort desc ,jscs2sort desc limit 600";
}
// print_r($sql);exit;
$result = M()->query($sql);
//print_r($result);exit;
$cp_list2=array();
if(count($arr)>1){
//数据预处理 增加权重排序虚拟字段 再替换
foreach ($arr as $k0 => $so4) {
foreach ($result as $k => $v) {
if($k0==0){
$result[$k]['sort']=0;
}
if(stristr($result[$k]['title'],$so4) ){
$result[$k]['sort']+=10000;
}
//搜索权重.标题打分.标题中包含关键字.打高分.内容中包含.打低分.然后循环相加
if(stristr($result[$k]['xinghao'],$so4) ){
$result[$k]['sort']+=1000;
}
if(stristr($result[$k]['description'],$so4) ){$result[$k]['sort']+=100;}
if(stristr(strip_tags($result[$k]['mycontent']),$so4) ){$result[$k]['sort']+=10;}
if(stristr(strip_tags($result[$k]['jscs2']),$so4) ){$result[$k]['sort']+=1;}
}
}
$last_names = array_column($result,'sort');//二维数组排序
array_multisort($last_names,SORT_DESC,$result);
//print_r($result);exit;
foreach ($arr as $k3 => $so) {
//高亮
if($k3==0){//第一次循环过滤html代码,第二次不能再过滤 否则,高亮会被过滤掉
foreach ($result as $k => $v) {
$cp_list2[$k]['title']= preg_replace("/($so)/i", "\1", $v['title']);
//用这个preg_replace函数正则替换关键字,是防止原文 大写字母被替换为小写,改变愿意
$cp_list2[$k]['xinghao']= preg_replace("/($so)/i", "\1", $v['xinghao']);
$cp_list2[$k]['huohao']= preg_replace("/($so)/i", "\1", $v['huohao']);
$cp_list2[$k]['description']= preg_replace("/($so)/i", "\1", $v['description']);
$sr4=strip_tags($v['mycontent']);
$sr4=str_replace(' '," " ,$sr4);
$sr4=str_replace(' '," " ,$sr4);
//$sr4=sub_key_h($sr4,$so,$len=40,$enc='utf-8');
$cp_list2[$k]['mycontent']= preg_replace("/($so)/i", "\1",$sr4 ); //过滤无用html
$sr5=strip_tags($v['jscs2']);
$sr5=str_replace(' '," " ,$sr5);
$sr5=str_replace(' '," " ,$sr5);
$cp_list2[$k]['jscs2']=sub_key_h($sr5,$so,$len=150,$enc='utf-8');
// $cp_list2[$k]['jscs2']= preg_replace("/($so)/i", "\1",$sr5 );
$cp_list2[$k]['isindex']=$v['isindex'];
$cp_list2[$k]['iss']=$v['iss'];
$cp_list2[$k]['type']=$v['type'];
$cp_list2[$k]['kucun']=$v['kucun'];
$cp_list2[$k]['id']=$v['id'];
$cp_list2[$k]['ctime']=$v['ctime'];
$cp_list2[$k]['pic']=$v['pic'];
$cp_list2[$k]['price']=$v['price'];
$cp_list2[$k]['price_hidden']=$v['price_hidden'];
}
}else{
foreach ($result as $k => $v) {
$cp_list2[$k]['title']= preg_replace("/($so)/i", "\1", $cp_list2[$k]['title']);
$cp_list2[$k]['xinghao']= preg_replace("/($so)/i", "\1", $cp_list2[$k]['xinghao']);
$cp_list2[$k]['huohao']= preg_replace("/($so)/i", "\1", $cp_list2[$k]['huohao']);
$cp_list2[$k]['description']= preg_replace("/($so)/i", "\1", $cp_list2[$k]['description']);
// $sr4=sub_key_h($cp_list2[$k]['mycontent'],$so,$len=40,$enc='utf-8');
$cp_list2[$k]['mycontent']= preg_replace("/($so)/i", "\1", $cp_list2[$k]['mycontent']);
//$cp_list2[$k]['jscs2']=sub_key_h($cp_list2[$k]['jscs2'],$so,$len=550,$enc='utf-8');
$cp_list2[$k]['jscs2']= preg_replace("/($so)/i", "\1", $cp_list2[$k]['jscs2']);
}
}
}
//print_r($cp_list2);exit;
}else{ //
//print_r($result);exit;
foreach ($result as $k => $v) {
$cp_list2[$k]['title']= preg_replace("/($soso)/i", "\1", $v['title']);
$cp_list2[$k]['xinghao']= preg_replace("/($soso)/i", "\1", $v['xinghao']);
$cp_list2[$k]['huohao']= preg_replace("/($soso)/i", "\1", $v['huohao']);
$cp_list2[$k]['description']= preg_replace("/($soso)/i", "\1", $v['description']);
$sr4=strip_tags($v['mycontent']);
//$sr4=preg_replace("/s(?=s)/","\1", $sr4);
$sr4=str_replace(' '," " ,$sr4);
$sr4=str_replace(' '," " ,$sr4);
//$sr4=sub_key_h($sr4,$soso,$len=40,$enc='utf-8');
$cp_list2[$k]['mycontent']= preg_replace("/($soso)/i", "\1", $sr4);
$sr7=strip_tags($v['jscs2']);
//$sr4=preg_replace("/s(?=s)/","\1", $sr4);
$sr7=str_replace(' '," " ,$sr7);
$sr7=str_replace(' '," " ,$sr7);
$cp_list2[$k]['jscs2']= preg_replace("/($soso)/i", "\1", $sr7);
$cp_list2[$k]['iss']=$v['iss'];
$cp_list2[$k]['type']=$v['type'];
$cp_list2[$k]['kucun']=$v['kucun'];
$cp_list2[$k]['id']=$v['id'];
$cp_list2[$k]['ctime']=$v['ctime'];
$cp_list2[$k]['pic']=$v['pic'];
$cp_list2[$k]['price']=$v['price'];
$cp_list2[$k]['isindex']=$v['isindex'];
$cp_list2[$k]['price_hidden']=$v['price_hidden'];
}
//print_r($cp_list2);exit;
}
// 分页
$count = count($cp_list2);
//print_r($count );exit;
$Page = new ThinkPage($count, 5);
$show = $Page->show();
$cp_list2 = array_splice(array_splice($cp_list2, $Page->firstRow), 0,5);//模拟分页.因为增加了权重搜索.所以.需要一次性把所有产品搜索出来.再权重打分进行排序.所以.分页需要用到array_splice
//print_r($cp_list2);exit;
//从数组中移除元素，并用新元素取代它：
//$page->firstRow是列表起始行数，$page->listRows是列表每页显示行数，
$this->assign('page',$show);
$this->cp_list=$cp_list2;
下面是一个高亮函数,截取内容左右部分内容.来显示,
需要放在functionmy自定义函数库中. 这个可能用不到.
function sub_key_h($str,$key,$len=20,$enc='utf-8'){
$strlen = mb_strlen($str,$enc);
$keylen = mb_strlen($key,$enc);
$keypos = mb_strpos($str,$key,0,$enc);
$leftpos = $keypos - 1;//关键字所在位置
$rightpos = $keypos + $keylen;
if($keylen > $len){
return "".mb_substr($key,0,$len,$enc)."...";
}
$result = "".$key."";
$result2 = $result1= "";;
for($i = 0;$i<$len - $keylen;$i++){
if($leftpos >= 0){
$result1 = mb_substr($str,$leftpos--,1,$enc).$result1;//向左截取
//继而向右截取一部分
if($rightpos < $strlen){
$result2 .= mb_substr($str,$rightpos++,1,$enc);
}
}else{
$result2 .= mb_substr($str,$rightpos++,1,$enc);
}
}
$result = $result1.$result.$result2;
return $result;
}
暑期编程PK赛
得CSDN机械键盘等精美礼品！
