Natively Connect to Azure Data Catalog Data in PHP

Drop the CData ODBC Driver for Azure Data Catalog into your LAMP or WAMP stack to build Azure Data Catalog-connected Web applications. This article shows how to use PHP's ODBC built-in functions to connect to Azure Data Catalog data, execute queries, and output the results.

Configure a DSN

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

You can optionally set the following to read the different catalog data returned from Azure Data Catalog.

<>CatalogName: Set this to the CatalogName associated with your Azure Data Catalog. To get your Catalog name, navigate to your Azure Portal home page > Data Catalog > Catalog Name

Connect Using OAuth Authentication

You must use OAuth to authenticate with Azure Data Catalog. OAuth requires the authenticating user to interact with Azure Data Catalog using the browser. For more information, refer to the OAuth section in the help documentation.

Establish a Connection

Open the connection to Azure Data Catalog by calling the or methods. To close connections, use or .

$conn = odbc_connect("CData ODBC AzureDataCatalog Source","user","password");

Connections opened with are closed when the script ends. Connections opened with the method are still open after the script ends. This enables other scripts to share that connection when they connect with the same credentials. By sharing connections among your scripts, you can save system resources, and queries execute faster.

$conn = odbc_pconnect("CData ODBC AzureDataCatalog Source","user","password");
...
odbc_close($conn); //persistent connection must be closed explicitly

Create Prepared Statements

Create prepared statements and parameterized queries with the function.

$query = odbc_prepare($conn, "SELECT * FROM Tables WHERE Name = ?");

Execute Queries

Execute prepared statements with .

$conn = odbc_connect("CData ODBC AzureDataCatalog Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Tables WHERE Name = ?");
$success = odbc_execute($query, array('FactProductInventory'));
 

Execute nonparameterized queries with .

$conn = odbc_connect("CData ODBC AzureDataCatalog Source","user","password");
$query = odbc_exec($conn, "SELECT DslAddressDatabase, Type FROM Tables WHERE Name = 'FactProductInventory'");
 

Process Results

Access a row in the result set as an array with the function.

$conn = odbc_connect("CData ODBC Azure Data Catalog data Source","user","password");
$query = odbc_exec($conn, "SELECT DslAddressDatabase, Type FROM Tables WHERE Name = 'FactProductInventory'");
while($row = odbc_fetch_array($query)){
 echo $row["DslAddressDatabase"] . "\n";
}

Display the result set in an HTML table with the function.

$conn = odbc_connect("CData ODBC Azure Data Catalog data Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Tables WHERE Name = ?");
$success = odbc_execute($query, array('FactProductInventory'));
if($success)
 odbc_result_all($query);

More Example Queries

You will find complete information on the driver's supported SQL in the help documentation. The code examples above are Azure Data Catalog-specific adaptations of the PHP community documentation for all ODBC functions.