PHP代码篇（三）--常用方法

模块下不间断更新，PHP常用方法，欢迎留言！

一、递归删除指定目录下所有文件及文件夹

/**
 * 递归删除指定目录下所有文件及文件夹
 * @param unknown $path,删除路径
 */
function deleteFileWay($path)
{
    //如果是目录则继续
    if(is_dir($path)){
        //扫描一个文件夹内的所有文件夹和文件并返回数组
        $info = scandir($path);
        foreach($info as $k=>$v){
             //排除目录中的.和..
            if($v != '.' && $v != '..'){
                if(is_dir($path.$v)){
                    //子目录中操作删除文件夹和文件
                    deleteFileWay($path.$v.'/');
                    //目录清空后删除空文件夹
                    @rmdir($path.$v.'/');
                }else{
                    //如果是文件直接删除
                    @unlink($path.$v);
                }
            }
        }
    }
}

/**
 * [result14 description]
 * 查找会员下面所有盟主
 * 参数$uid会员id
 * 返回
 * 'status'=>0，没有下级盟主
 * 'status'=>1，'data'=>下级盟主id，数组类型
 */
function result14($uid){
    $cancel_user_list=$uid.',';//下级所有盟主列表列表，用于sqlin语句
    $crt_level_user=pdo_getall('nets_hjk_members', array('from_uid' => $uid), array('type','memberid','level'));
    if (empty($crt_level_user)) {
        return array('status'=>0,'hint'=>"没有需要变更的下级1");
    }
    while (!empty($crt_level_user)) {
        //从当前用户中提取memberid，用于下一次取下级用户
        $crt_level_user_for_sqlin='';
        $crt_level_leader_for_sqlin='';
        foreach ($crt_level_user as $value) {
            $crt_level_user_for_sqlin .= $value['memberid'].',';
                //遍历crt_level_user中所有的行，取出盟主的memberid放在$crt_level_leader_for_sqlin中
            if ($value['type'] == 1) {
                $crt_level_leader_for_sqlin .= $value['memberid'].',';
            }
        }
        $cancel_user_list .= $crt_level_leader_for_sqlin;
        //获取当前层级下级用户
        if(!empty($crt_level_user_for_sqlin)){
            $crt_level_user_for_sqlin=substr($crt_level_user_for_sqlin,0,strlen($crt_level_user_for_sqlin)-1);
        }
        $crt_level_user=pdo_fetchall("SELECT ex.memberid,ex.type FROM ".tablename('nets_hjk_members')." AS ex where from_uid in(". $crt_level_user_for_sqlin.") ");
    }
    $junior_user_list = '';
    $cancel_user_list = substr($cancel_user_list,0,strlen($cancel_user_list)-1);
    $cancel_user_list_arr = explode(",",$cancel_user_list);
    //当下会员下级所有的盟主，数组
    $cancel_user_list_arr = array_splice($cancel_user_list_arr,1);
    if (empty($cancel_user_list_arr)) {
        return array('status'=>0,'hint'=>"没有需要变更的下级2");
    }else{
        return array('status'=>1,'data'=>$cancel_user_list_arr);
    }
}

二、数据库常用操作

//插入一条数据
INSERT INTO ims_stat_rule (rid,hit) VALUES (351,990);

//删除一条数据
DELETE FROM ims_nets_hjk_applyfor WHERE member_id = 49483;

//修改一条数据
update ims_nets_hjk_members set level = 4 where id = 100248;

//查询数据
select * from ims_nets_hjk_members where memberid = 18978;

//格式化时间戳
FROM_UNIXTIME(M1.created_at,'%Y-%m-%d %H:%i:%s') AS created_at;

//SQL中IF的用法，如果表M1时间戳为0则默认为'/'，反之则进行格式化时间戳处理
IF(M1.finish_time = 0,'/',FROM_UNIXTIME(M1.finish_time,'%Y-%m-%d %H:%i:%s')) AS finish_time

三、ThinkPHP5.0常用操作

//查询区间内
$device_string = $db->table('ims_nets_hjk_devices')
                    ->where('device_id',['>=',$k],['<=',$j],'AND')
                    ->where('status',0)
                    ->field('device_id')
                    ->limit(50)
                    ->select();

// 如下为CASE的用法-----------------------------
$level = Db::query("SELECT SUM(1) AS '全部用户',SUM(CASE WHEN type=1 AND level= 0 THEN 1 ELSE 0 END) AS '店主',SUM(CASE WHEN type=1 AND level= 1 THEN 1 ELSE 0 END) AS '高级店主',SUM(CASE WHEN type=1 AND level= 2 THEN 1 ELSE 0 END) AS '特约店主',SUM(CASE WHEN type=0 THEN 1 ELSE 0 END) AS '普通用户',SUM(CASE WHEN is_partner=1 THEN 1 ELSE 0 END) AS '合伙人',SUM(CASE WHEN is_insider=1 THEN 1 ELSE 0 END) AS '内部',SUM(CASE WHEN is_city_agent=1 THEN 1 ELSE 0 END) AS '市级代理' FROM ims_nets_hjk_members");
SELECT SUM(CASE WHEN
                     pay_status = 1 AND
                     date_format(from_UNIXTIME(`pay_time`),'%Y-%m-%d') = date_format(now(),'%Y-%m-%d') THEN 1 ELSE 0 END
                     ) AS S1,
                 SUM(CASE WHEN
                     pay_status = 1 AND
                     date_format(from_UNIXTIME(`pay_time`),'%Y-%m-%d') = date_format(now(),'%Y-%m-%d') THEN point ELSE 0 END
                     ) AS S2,
                 SUM(CASE WHEN
                     pay_status = 1 AND
                     order_status = 0 THEN 1 ELSE 0 END
                     ) AS S3
FROM ims_integral_order;

// 优化一个四表联查，以会员表作为临时表--------------------------
$list = Db::query("
                     SELECT
                     M1s.*, M2.avatar AS avatar_is,
                     M2.avatar AS avatar_is,M2.nickname AS nickname_is,M2.pid AS pid_is,
                     M3.integral,M3.asset,M3.wallet,
                     FROM_UNIXTIME(M4.addTime,'%Y-%m-%d %H:%i:%s') AS addTime
                     FROM
                     (
                         SELECT
                             memberid,pid,avatar,nickname,FROM_UNIXTIME(created_at,'%Y-%m-%d %H:%i:%s') AS created_at,level,type,is_city_agent,is_partner,is_insider,realname,mobile,from_uid
                         FROM
                             ims_nets_hjk_members AS M1
                         WHERE ".$whes."
                         ORDER BY
                             created_at DESC
                         LIMIT ".(($pindex - 1) * $psize).",". $psize."
                     ) AS M1s
                     LEFT JOIN ims_nets_hjk_members AS M2 ON M1s.from_uid = M2.memberid
                     LEFT JOIN ims_mc_members AS M3 ON M1s.memberid = M3.uid
                     LEFT JOIN t_fans_log AS M4 ON M1s.memberid = M4.fans_memberId
                     ");

//TP自加和自减
$res = $this->where('single','gt',0)
　　　　->update([
　　　　　　　　'red_fee'=>['INC',$fee],//自加
　　　　　　　　'create_time'=>time(),
　　　　　　　　'count'=>['DEC',1],//自减
　　　　　　　　　]);

//TP大于或者小于
$res = $this->where([
　　　　　　['status','=',1],
　　　　　　['page_id','>',0]
　　　　　　]);

//DB操作批量插入
$res = $db->table('ims_nets_hjk_sogo_licence')->insertAll($sogo_licence);

//查询指定会员已激活的设备，并且不在ims_nets_hjk_sogo_equipment表里面，EXISTS用法
$list = $db->query("SELECT s_id FROM `ims_nets_hjk_devices`
　　　　　　　　　　WHERE active_member_id = ".$uid."
　　　　　　　　　　AND `status` = 1
　　　　　　　　　　AND NOT EXISTS
　　　　　　　　　　　　(SELECT s_id FROM ims_nets_hjk_sogo_equipment WHERE s_id = ims_nets_hjk_devices.s_id )

//打印SQL语句
->buildSql();

四、ThinkPHP5.0常用操作

//模拟url传递数组
$url = 'http://niushop.jingjinglego.com/index.php?s=/admin/We7Config/addIndexAd&type=2&adList[0][sort]=456&adList[0][img]=upad/test/1e.jpg&adList[0][outerUrl]=www.bai.com&adList[0][source]=1&adList[1][sort]=456&adList[1][img]=upad/test/1e.jpg&adList[1][outerUrl]=www.bai.com&adList[1][source]=1';

//调用请求类request写法,接受数组
$ids = request->post('ids/a');

//获取参数
use think\Request;
$request = Request::instance();
$method = $request->method();//获取上传方式
$request->param();//获取所有参数，最全
$get = $request->get();//获取get上传的内容
$post = $request->post();//获取post上传的内容
$request->file('file')//获取文件

//错误和正确提示及跳转error/success
$this->error("抱歉你不是最帅的人", __URL__ . "/wap/We7Store/storeManagement");

// 锁定跳转,url重定向
$redirect = __URL(__URL__ . "/wap/login/userlock");
$this->redirect($redirect); 

四、检查字符串是否是URL

//判断是否是url
function is_url($v){
    $pattern="#(http|https)://(.*\.)?.*\..*#i";
    if(preg_match($pattern,$v)){
        return true;
    }else{
        return false;
    }
}