Natively Connect to Coinbase Data in PHP

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

Start by setting the Profile connection property to the location of the Coinbase Profile on disk (e.g. C:\profiles\Coinbase.apip). Next, set the ProfileSettings connection property to the connection string for Coinbase (see below).

Coinbase API Profile Settings

Coinbase uses OAuth-based authentication.

First you need to register an OAuth app with Coinbase. This is done from your account under 'Settings' > 'API Access' > 'New OAuth2 Application'.

After setting the following connection properties, you are ready to connect:

• AuthScheme: Set this to OAuth.
• InitiateOAuth: Set this to GETANDREFRESH. You can use InitiateOAuth to manage the process to obtain the OAuthAccessToken.
• OAuthClientId: Set this to the ClientID that is specified in you app settings.
• OAuthClientSecret: Set this to the ClientSecret that is specified in you app settings.
• CallbackURL: Set this to the Redirect URI you specified in your app settings.

Establish a Connection

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

$conn = odbc_connect("CData ODBC API 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.

$conn = odbc_pconnect("CData ODBC API Source","user","password");
...
odbc_close($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 Deposits WHERE Committed = ?");

Execute Queries

Execute prepared statements with .

$conn = odbc_connect("CData ODBC API Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Deposits WHERE Committed = ?");
$success = odbc_execute($query, array('true'));
 

Execute nonparameterized queries with .

$conn = odbc_connect("CData ODBC API Source","user","password");
$query = odbc_exec($conn, "SELECT Id, Amount FROM Deposits WHERE Committed = 'true'");
 

Process Results

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

$conn = odbc_connect("CData ODBC Coinbase data Source","user","password");
$query = odbc_exec($conn, "SELECT Id, Amount FROM Deposits WHERE Committed = 'true'");
while($row = odbc_fetch_array($query)){
 echo $row["Id"] . "\n";
}

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

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