Natively Connect to Redis Data in PHP

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

Set the following connection properties to connect to a Redis instance:

• : Set this to the name or address of the server your Redis instance is running on. You can specify the port in .
• : Set this to the password used to authenticate with a password-protected Redis instance , using the Redis AUTH command.

Set to negotiate SSL/TLS encryption when you connect.

Establish a Connection

Open the connection to Redis by calling the or methods. To close connections, use or .

$conn = odbc_connect("CData ODBC Redis 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.

$conn = odbc_pconnect("CData ODBC Redis Source","user","password");
...
odbc_close($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 Customers WHERE Country = ?");

Execute Queries

Execute prepared statements with .

$conn = odbc_connect("CData ODBC Redis Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Customers WHERE Country = ?");
$success = odbc_execute($query, array('US'));
 

Execute nonparameterized queries with .

$conn = odbc_connect("CData ODBC Redis Source","user","password");
$query = odbc_exec($conn, "SELECT City, CompanyName FROM Customers");
 

Process Results

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

$conn = odbc_connect("CData ODBC Redis data Source","user","password");
$query = odbc_exec($conn, "SELECT City, CompanyName FROM Customers");
while($row = odbc_fetch_array($query)){
 echo $row["City"] . "\n";
}

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

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