hdwiki下支持以空格分隔的多关键字搜索

 默认情况下hdwiki不支持多关键字搜索，现做如下修改使其支持以空格分隔的多关键字搜索

打开/model/search.class.php查找(大概４５行)

$sqlkeywords .="d.".$element['searchtype']." LIKE '%$keywords%'";

修改为

$arraylist = split(" ",$keywords); //将查询关键字通过空格进行分解
                       
                        $sqlkeywords .= "(";

                        for($i=0; $i<count($arraylist); $i++) //把它们全部输出来
                        {
                                $keyword = $arraylist[$i];
                                $sqlkeywords .="d.".$element['searchtype']." LIKE '%$keyword%' and ";
                        }
                        $strleng = strlen($sqlkeywords); 想知道更多内容:
                        $temp =  substr($sqlkeywords, 0, $strleng-4);       

                        $temp .= ") or (";
                        for($i=0; $i<count($arraylist); $i++) //把它们全部输出来 想知道更多内容:
                        {
                                $keyword = $arraylist[$i];
                                $temp .="d.content LIKE '%$keyword%' and ";
                        }
                        $templeng = strlen($temp);
                        $temp =  substr($temp, 0, $templeng-4);
                        $temp .= ")";
                        $sqlkeywords = $temp;