Gets the backend's process ID
$connection
pg_get_pid gets the backend's (database server process) PID. The PID is useful to determine whether or not a NOTIFY message received via pg_get_notify is sent from another process or not.
connection
PostgreSQL database connection resource.
The backend database process ID.
Example #1 PostgreSQL backend PID
<?php $conn = pg_pconnect("dbname=publisher");if (!$conn) { echo "An error occurred.\n"; exit;}// Backend process PID. Use PID with pg_get_notify()$pid = pg_get_pid($conn);?>