后台模糊搜索+分页

public function index(){
    //导入分页第三方文件
    import('Org.Util.Page');

    $where = array();
    $find_after = array();
    //关键字(模糊搜索)
    $kwd = trim($_GET['kwd']);
    if($kwd){
        $lk_arr = array('ct_title','contract_id','task_id');
        $like_arr = array();
        foreach($lk_arr as $val){
　　　　　　$like_arr[]=$val." like '%$kwd%'";
　　　　　}
        $where[] = "(".implode(' or ', $like_arr).")";

        $wh['username']=array('like',"%$kwd%");
        $find_id = M('user')->field('sysid')->where($wh)->select();
        foreach($find_id as $v){
            $find_after[] = $v['sysid'];
        }
        if($find_id){
            $lk_array = array('tk_uid','ds_uid');
            foreach($lk_array as $val){
                foreach($find_after as $v){
                    $like_arr[]=$val." like '%$v%'";
                }
            }
            $where[0] = "(".implode(' or ', $like_arr).")";
        }
    }
    // 排序
    $_GET['sort'] = $sort = $_GET['sort']==2?2:1;
    if($sort==1){
        $order = 'time_create asc';
    }else{
        $order = 'time_create desc';
    }

    //分页
    $page = new \Page(M('order_contract')->where($where)->count(),20);
    $list = M('order_contract')
        ->limit($page->num_offset.','.$page->num_limit)
        //->join(array('ds_order_contract'=>'order_contract'))
        ->field('...')
        ->where($where)
        ->order($order)
        ->select();

    if(empty($list)){
        $this->error('没有您要查找的东西！',U('Contract/index'));
    }
    //转换各种状态
    $res = $this->contract_status($list);

    $this->assign('page',$page->fpage());
    $this->assign('list',$res);
    $this->assign('formget',$_GET);
    $this->display('index');
}