php man page for pg_get_pid

PG_GET_PID(3)															     PG_GET_PID(3)

pg_get_pid - Gets the backend's process ID

SYNOPSIS
       int pg_get_pid (resource  $connection)

DESCRIPTION
       pg_get_pid(3) 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(3) is sent from another process or not.

PARAMETERS
	      o $connection
		- PostgreSQL database connection resource.

RETURN VALUES
	The backend database process ID.

EXAMPLES
       Example #1

	      PostgreSQL backend PID

	      <?php
	      $conn = pg_pconnect("dbname=publisher");
	      if (!$conn) {
		echo "An error occurred.
";
		exit;
	      }

	      // Backend process PID. Use PID with pg_get_notify()
	      $pid = pg_get_pid($conn);
	      ?>

SEE ALSO
       pg_get_notify(3).

PHP Documentation Group 													     PG_GET_PID(3)