php批量更新多条数据-526互联

    /**
     * @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;
        }
    }