Amazon-DynamoDB-Wrapper

Another Amazon DynamoDB PHP Wrapper For AWS SDK V3

This is an object wrapper for Amazon DynamoDB SDK. It helps to manipulate the items that you can use with DynamoDB.

Getting Started

Include the library

require("Amazon\DynamoDB\AutoLoader.php");

Create Connection

$dc = new \Amazon\DynamoDB\AmazonDynamoDB($key, $secret, $region);

Manage tables

Work in progress

Add item

$item = new \Amazon\DynamoDB\Item('TABLENAME');
$item['numericAttribute'] = 3;
$item['stringAttribute'] = '3';
$item['NumericListAttribute'] = array(
  1,2,3
);
$item['StringListAttribute'] = array(
  'a', 'b', 'c'
);

$item['MapAttribute'] = array(
  'a' => 2,
  'b' => 'string'
);

//! Setting Condition Expression
$ctx = new \Amazon\DynamoDB\Context\AddItem();
$ctx->SetConditionExpression("attribute_not_exists('numericAttribute')");

$dc->AddItem($item)

Get item

$item = new \Amazon\DynamoDB\Item('TABLENAME');
$item['primary'] = 3;
$item['range'] = 1;

$res = $dc->GetItem( $item );

Update item

$item = new \Amazon\DynamoDB\Item('TABLENAME');
$item['primary'] = 3;
$item['range'] = 1;

$updateCtx = new \Amazon\DynamoDB\Context\UpdateItem();

//! Section Set allows you to update data with the values that you specify
$updateCtx->SetSectionSet("var = var + 1, var2 = 0");

//! Section Remove allows you to remove an attribute to the item
$updateCtx->SetSectionRemove("var3");

//! Section add allows you to add a value to a numeric attribute or set
$updateCtx->SetSectionAdd("var4 1");

//! Set the return values
$updateCtx->SetReturnValues("ALL_OLD");

$res = $dc->UpdateItem( $item, $updateCtx );

From DynamoDB documentation

Use ReturnValues if you want to get the item attributes as they appeared either before or after they were updated. For UpdateItem, the valid values are:

• NONE - If ReturnValues is not specified, or if its value is NONE, then nothing is returned. (This setting is the default for ReturnValues.)
• ALL_OLD - If UpdateItem overwrote an attribute name-value pair, then the content of the old item is returned.
• UPDATED_OLD - The old versions of only the updated attributes are returned.
• ALL_NEW - All of the attributes of the new version of the item are returned.
• UPDATED_NEW - The new versions of only the updated attributes are returned.

Delete item

Work in progress

Perform a query

$item = new \Amazon\DynamoDB\Context\Query('TABLENAME');
$query->SetConsistentRead(true);
$query->SetKeyConditionExpression('id = "1201"', 'dateday BETWEEN "2015-09-13" AND "2015-09-18"');
$res = $dc->Query($query);

Perform a scan

$query = new \Amazon\DynamoDB\Context\Scan('TABLENAME');
$res = $dc->Scan($query);

Get Consumed Capacity

//! Get the Consumed capacity units used for read all tables
$dc->GetReadConsumedCapacityUnits();

//! Get the Consumed capacity units used for read a single table
$dc->GetReadConsumedCapacityUnits('TABLENAME');

//! Get the Consumed capacity units used for write on all tables
$dc->GetWriteConsumedCapacityUnits();

//! Get the Consumed capacity units used for write on a single table
$dc->GetWriteConsumedCapacityUnits('TABLENAME');

//! Reset All the consumed Capacity Units
$dc->ClearConsumedCapacityUnits();

//! Reset the consumed Capacity Units on a specific table
$dc->ClearConsumedCapacityUnits('TABLENAME');