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Natively Connect to Snowflake Data in PHP

The CData ODBC driver for Snowflake enables you to create PHP applications with connectivity to Snowflake data. Leverage the native support for ODBC in PHP.

Drop the CData ODBC Driver for Snowflake into your LAMP or WAMP stack to build Snowflake-connected Web applications. This article shows how to use PHP's ODBC built-in functions to connect to Snowflake 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.

To connect to Snowflake:

  1. Set User and Password to your Snowflake credentials and set the AuthScheme property to PASSWORD or OKTA.
  2. Set URL to the URL of the Snowflake instance (i.e.: https://myaccount.snowflakecomputing.com).
  3. Set Warehouse to the Snowflake warehouse.
  4. (Optional) Set Account to your Snowflake account if your URL does not conform to the format above.
  5. (Optional) Set Database and Schema to restrict the tables and views exposed.

See the Getting Started guide in the CData driver documentation for more information.

Establish a Connection

Open the connection to Snowflake by calling the odbc_connect or odbc_pconnect methods. To close connections, use odbc_close or odbc_close_all.

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

Connections opened with odbc_connect are closed when the script ends. Connections opened with the odbc_pconnect 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.

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

Create Prepared Statements

Create prepared statements and parameterized queries with the odbc_prepare function.

$query = odbc_prepare($conn, "SELECT * FROM Products WHERE Id = ?");

Execute Queries

Execute prepared statements with odbc_execute.

$conn = odbc_connect("CData ODBC Snowflake Source","user","password"); $query = odbc_prepare($conn, "SELECT * FROM Products WHERE Id = ?"); $success = odbc_execute($query, array('1'));

Execute nonparameterized queries with odbc_exec.

$conn = odbc_connect("CData ODBC Snowflake Source","user","password"); $query = odbc_exec($conn, "SELECT Id, ProductName FROM Products");

Process Results

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

$conn = odbc_connect("CData ODBC Snowflake data Source","user","password"); $query = odbc_exec($conn, "SELECT Id, ProductName FROM Products"); while($row = odbc_fetch_array($query)){ echo $row["Id"] . "\n"; }

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

$conn = odbc_connect("CData ODBC Snowflake data Source","user","password"); $query = odbc_prepare($conn, "SELECT * FROM Products WHERE Id = ?"); $success = odbc_execute($query, array('1')); 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 Snowflake-specific adaptations of the PHP community documentation for all ODBC functions.