Marshaling the data and putting an item. This is essentially an upgraded version of the existing DynamoDbClient::formatAttributes() method. The Marshaler also provides the marshalItem() and unmarshalItem() methods that do the same type of thing, but for arrays. $json = $marshaler->unmarshalJson($result) To retrieve an item and get the JSON document back, you need to use the unmarshalJson() method. The output of marshalJson() is an associative array that includes all the type information required for the DynamoDB 'Item' parameter. $json = file_get_contents('/path/to/your/document.json') $client = DynamoDbClient::factory(/* your config */) You can use the DynamoDB Marshaler to convert this JSON document into the format required by DynamoDB. Let’s say you have JSON document describing a contact in the following format: The Marshaler object has methods for marshaling JSON documents and PHP arrays to the DynamoDB item format and unmarshaling them back. To make these new types even easier for our PHP SDK users, we added a new class, called the DynamoDB Marshaler, in Version 2.7.7 of the AWS SDK for PHP. These new types, along with some API updates, make it possible to store more complex, multilevel data, and use DynamoDB for document storage. Example isset(), empty(), is_array() etc.Ĭhecking-object-before-conversion.Back in October of 2014, Amazon DynamoDB added support for new data types, including the map ( M) and list ( L) types. PHP includes exclusive functions to verify data availability and its type. This method verifies if the input is an object. This example applies the is_object verification before converting a PHP object to an array. It is good programming practice to check the data availability before processing. $student = new student("5678", "William", "South Carolina", "Columbia", "US") The json_decode() converts the PHP object to array.Ĭonvert-class-object-into-array.php id = $id The json_encode() function prepares the JSON object to supply it for decoding. Then, the Student class instance is encoded to prepare object type data. The class constructor sets the properties of the object during the instantiation. This example constructs a PHP class object bundle. This is the output of the recursive PHP object to the array conversion program above. $object->address->state = "South Carolina" $object->address->shipping->zipcode = 1234 $object->address->shipping = new stdClass() $object->address->billing->zipcode = 9950 $object->address->email = new stdClass() It performs the conversion recursively on each level of the input object.Ĭonverting-recursive-object-to-array.php id = 5678 This program defines a custom function to convert a PHP object to array. The hierarchical object bundle is set as the input for the conversion process. It adds more properties at a nested level at different depths. This example uses an input object with depth = 3. Type-casting-to-convert-object-to-array.php id = 5678 It prepends the target data type enclosed with parenthesis. The PHP typecasting syntax is shown below. The output will be the same as we have seen above. It replaces the JSON encode decode via conversion with the typecasting statement. The below program uses the same input object. This is an alternate method to convert an object type into an array. This article includes examples of using both of the above methods to perform the object to array conversion. It supplied boolean true as a second parameter to get the output in an array format. The second method applies json_decode() on the given object. Typecasting is a straightforward method to convert the type of input data. Encoding and decoding object properties into an array of elements.There are two ways to achieve a PHP object to array conversion. If an object contains unassigned properties then it will return an array with numerical keys. When converting an object to array, the object property ‘name:value’ pairs will form an associative array. The below screenshot shows the output of this program.ĭifferent ways of converting a PHP object to array PHP object to array conversion in a line using json_decode id = 5678 Īfter decoding, the output array is printed to the browser.
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