php批量更新修改数据库

完整版

/**
 * 批量更新函数
 * @param $data array 待更新的数据，二维数组格式
 * @param $table string 更新的表名
 * @param string $field string 值不同的条件，默认为id
 * @param array $params array 值相同的条件，键值对应的一维数组
 * @return bool|string
 */  
  public function batchUpdate($data=[],$table='user',$field="id")
{
 
      
        if(count($data)==0 || empty($table)) return "" ;
        //获取所有的id
        $data_keys = array_keys($data);

        $col = Db::query("SHOW COLUMNS FROM `".$table."`");
 
        $cols = [];
        array_map(function($value) use(&$cols){
            $cols[] = $value['Field'];
        },$col);
        //拼接批量更新sql语句
        $sql = "UPDATE {$table} SET ";
        //合成sql语句
        foreach ($data[$data_keys[0]] as $key => $value) {
            if(!in_array($key,$cols)) continue;
            $sql .= "{$key} = CASE  ".$field." ";
            foreach ($data as $k=>$v) {
                  $str= $v[$key];
                    $needle= '+';
                    $pos = strpos($str, $needle);
                    if($pos){
                         $z=explode("+",$v[$key]);
                        $sql .= sprintf("WHEN %d THEN '%s'+ %e", $k, $z[0],floatval($z[1]));
                    }else{
                           $sql .= sprintf("WHEN %d THEN '%s' ", $k, $v[$key]);
                    }
               
            }
            $sql .= "END, ";
        }
        //把最后一个,去掉
        $sql = substr($sql, 0, strrpos($sql,','));

        //合并所有id
        $ids = implode(',', $data_keys);
        //拼接sql
        $sql .= " WHERE ".$field." IN ({$ids})";
        return $sql;
      //  dump($userModel->execute($sql));
  
}

粗写

 /**
 * 批量更新函数
 * @param $data array 待更新的数据，二维数组格式
 * @param $table string 更新的表名
 * @param string $field string 值不同的条件，默认为id
 * @param array $params array 值相同的条件，键值对应的一维数组
 * @return bool|string
 */  
  public    function batchUpdate($data=[],$table='user',$field="id")
{
 
      
        if(count($data)==0 || empty($table)) return "" ;
        //获取所有的id
        $data_keys = array_keys($data);

        $col = Db::query("SHOW COLUMNS FROM `".$table."`");
 
        $cols = [];
        array_map(function($value) use(&$cols){
            $cols[] = $value['Field'];
        },$col);
        //拼接批量更新sql语句
        $sql = "UPDATE {$table} SET ";
        //合成sql语句
        foreach ($data[$data_keys[0]] as $key => $value) {
            if(!in_array($key,$cols)) continue;
            $sql .= "{$key} = CASE  ".$field." ";
            foreach ($data as $k=>$v) {
                $z=explode("+",$v[$key]);
                $sql .= sprintf("WHEN %d THEN '%s'+ %e", $k, $z[0],floatval($z[1]));
            }
            $sql .= "END, ";
        }
        //把最后一个,去掉
        $sql = substr($sql, 0, strrpos($sql,','));

        //合并所有id
        $ids = implode(',', $data_keys);
        //拼接sql
        $sql .= " WHERE ".$field." IN ({$ids})";
        return $sql;
      //  dump($userModel->execute($sql));
  
}
 public    function batchUpdate2($data=[],$table='user',$field="id")
{
 
      
        if(count($data)==0 || empty($table)) return "" ;
        //获取所有的id
        $data_keys = array_keys($data);

        $col = Db::query("SHOW COLUMNS FROM `".$table."`");
 
        $cols = [];
        array_map(function($value) use(&$cols){
            $cols[] = $value['Field'];
        },$col);
        //拼接批量更新sql语句
        $sql = "UPDATE {$table} SET ";
        //合成sql语句
        foreach ($data[$data_keys[0]] as $key => $value) {
            if(!in_array($key,$cols)) continue;
            $sql .= "{$key} = CASE  ".$field." ";
            foreach ($data as $k=>$v) { 
                $sql .= sprintf("WHEN %d THEN '%s' ", $k, $v[$key]);
            }
            $sql .= "END, ";
        }
        //把最后一个,去掉
        $sql = substr($sql, 0, strrpos($sql,','));

        //合并所有id
        $ids = implode(',', $data_keys);
        //拼接sql
        $sql .= " WHERE ".$field." IN ({$ids})";
        return $sql;
      //  dump($userModel->execute($sql));
  
}
 
    

批量修改方式1

UPDATE `chaifenpan`.`fa_article` SET `id`='1', `updatetime`='1586507681', `createtime`='1586507681', `cat_id`='16', `content`='技术支持', `short_title`='阿瑟东', `title`='阿瑟东' WHERE (`id`='1');
UPDATE `chaifenpan`.`fa_article` SET `id`='2', `updatetime`='1586507713', `createtime`='1586507713', `cat_id`='15', `content`='行业资讯', `short_title`='啊士大夫', `title`='啊士大夫' WHERE (`id`='2');
UPDATE `chaifenpan`.`fa_article` SET `id`='3', `updatetime`='1589705606', `createtime`='1586507727', `cat_id`='16', `content`='欢迎加鲁', `short_title`=' 简介 简介 简介 简介 简介 简介 简介 简介 简介', `title`=' 简介 简介 简介 简介' WHERE (`id`='3');

批量修改方式2

UPDATE `xuer_info`
   SET userlevel = ( CASE id
                       WHEN 1 THEN '低级'
                       WHEN 2 THEN '中级'
                       WHEN 3 THEN '高级'
                       WHEN 4 THEN '特级'
                       WHEN 5 THEN 'laji'
                       ELSE '无级'
                     END ),
       username = ( CASE id
                      WHEN 1 THEN '邓'
                      WHEN 2 THEN '沙'
                      WHEN 3 THEN '利'
                      WHEN 4 THEN '文'
                      WHEN 5 THEN '亨'
                      ELSE username
                    END ),
       usertype = ( CASE id
                      WHEN 1 THEN 'A1'
                      WHEN 2 THEN 'A2'
                      WHEN 3 THEN 'A3'
                      WHEN 4 THEN 'A4'
                      WHEN 5 THEN 'A5'
                      ELSE usertype
                    END )