php批量更新多条数据

 /**
  * @param $table 表名
  * @param array $multipleData 拼接的批量更新的数组格式：
  * $students = [[‘id’ => 1, ‘city_id’ => ‘100010’],[‘id’ => 2, ‘city_id’ => ‘100011’],];
  *拼接后语句：UPDATE base_info SET `city_id` = CASE WHEN `id` = 1 THEN 100010 WHEN `id` = 2 THEN 100011 ELSE `city_id` END WHERE `id` IN (1,2)
  * @return false|int
  */
 function updateBatch($tableName,$multipleData = [])
 {
     try {
         if (empty($multipleData)) {
             info("批量更新数据为空");
             return false;
         }
         $firstRow = current($multipleData);

         $updateColumn = array_keys($firstRow);
         // 默认以id为条件更新，如果没有ID则以第一个字段为条件
         $referenceColumn = isset($firstRow['id']) ? 'id' : current($updateColumn);
         unset($updateColumn[0]);
         // 拼接sql语句
         $updateSql = "UPDATE " . $tableName . " SET ";
         $sets = [];
         $bindings = [];
         foreach ($updateColumn as $uColumn) {
             $setSql = "`" . $uColumn . "` = CASE ";
             foreach ($multipleData as $data) {
                 $setSql .= "WHEN `" . $referenceColumn . "` = ? THEN ? ";
                 $bindings[] = $data[$referenceColumn];
                 $bindings[] = $data[$uColumn];
             }
             $setSql .= "ELSE `" . $uColumn . "` END ";
             $sets[] = $setSql;
         }
         $updateSql .= implode(', ', $sets);
         $whereIn = collect($multipleData)->pluck($referenceColumn)->values()->all();
         $bindings = array_merge($bindings, $whereIn);
         $whereIn = rtrim(str_repeat('?,', count($whereIn)), ',');
         $updateSql = rtrim($updateSql, ", ") . " WHERE `" . $referenceColumn . "` IN (" . $whereIn . ")";
         info($updateSql);
         // 传入预处理sql语句和对应绑定数据
         return DB::update($updateSql, $bindings);
     } catch (\Exception $e) {
         info($e->getMessage());
         return false;
     }
 }

参考：https://blog.csdn.net/byywcsnd/article/details/78231429