适用于PHP DynamoDB的AWS SDK仅适用于非空变量的PutItem

时间:2015-05-21 15:01:47

标签: php amazon-web-services sdk amazon-dynamodb

我正在从数组中将变量插入AWS DynamoDB $ dbf [$ a] ['variable1'],$ dbf [$ a] ['variable2'],$ dbf [$ a] ['variable3'] ...

对于某些$ a,只设置'variable1'和'variable2',并且 对于其他$ a,所有'变量#'都已设置。

以下代码不起作用,因为Null或非set变量不起作用 允许。

循环中是否只有一种方法只能为设置的变量尝试“PutItem”?

foreach($dbf as $day)
{
$result = $client->PutItem(array(
    'TableName' => 'AWIS',
    'Item' => array(
        'id' => array('S' =>  $day['id']),
        'date'=> array('S' => $day['date']),
       'max'=> array('N' => $day['max']),
       'min'=> array('N' => $day['min']),
       'pre'=> array('N' => $day['pre']),
       'max_soil_temp'=> array('N' => $day['max_soil_temp']),
       'min_soil_temp'=> array('N' => $day['min_soil_temp']),
       'evap'=> array('N' => $day['evap']),
       'veg_wetting'=> array('N' => $day['veg_wetting']),
       'solar_rad'=> array('N' => $day['solar_rad']),
       'ob_temp'=> array('N' => $day['ob_temp']),
       'adj_min'=> array('N' => $day['adj_min']),
       'chill_hours'=> array('N' => $day['chill_hours'])
                 ),
                           ));
}

1 个答案:

答案 0 :(得分:1)

您可以这样做:

if ($yourValue) {
        $params['yourKey'] = array(
            'Action' => 'PUT',
            'Value' => array(
                Type::STRING => $yourValue
            )
        );
    }

$response = $Client->updateItem(array(
            "TableName" => "tableName",
            "Key" => array(
                "Id" => array(
                    Type::STRING => $Id
                )
            ),
            "AttributeUpdates" => $params
                )
        ); 

设置循环中可用的所有参数,并仅更新那些可用的值

希望有所帮助