Natively Connect to Greenhouse Data in PHP

Drop the CData ODBC Driver for Greenhouse into your LAMP or WAMP stack to build Greenhouse-connected Web applications. This article shows how to use PHP's ODBC built-in functions to connect to Greenhouse 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 need an API key to connect to Greenhouse. To create an API key, follow the steps below:

1. Click the Configure icon in the navigation bar and locate Dev Center on the left.
2. Select API Credential Management.
3. Click Create New API Key.
• Set "API Type" to Harvest.
• Set "Partner" to custom.
• Optionally, provide a description.
4. Proceed to Manage permissions and select the appropriate permissions based on the resources you want to access through the driver.
5. Copy the created key and set APIKey to that value.

Establish a Connection

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

$conn = odbc_connect("CData ODBC Greenhouse 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.

$conn = odbc_pconnect("CData ODBC Greenhouse Source","user","password");
...
odbc_close($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 Applications WHERE Status = ?");

Execute Queries

Execute prepared statements with .

$conn = odbc_connect("CData ODBC Greenhouse Source","user","password");
$query = odbc_prepare($conn, "SELECT * FROM Applications WHERE Status = ?");
$success = odbc_execute($query, array('Active'));
 

Execute nonparameterized queries with .

$conn = odbc_connect("CData ODBC Greenhouse Source","user","password");
$query = odbc_exec($conn, "SELECT Id, CandidateId FROM Applications WHERE Status = 'Active'");
 

Process Results

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

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