pg_get_notify
(PHP 4 >= 4.3.0, PHP 5)
pg_get_notify — Ping database connection
Description
array pg_get_notify
( resource $connection
[, int $result_type
] )
pg_get_notify() gets notify message sent by NOTIFY SQL command. To recieve nofigy messages, LISTEN SQL command must be issued. If there is notify message on the connection, array contains message name and backend PID is returned. If there is no message, FALSE is returned.
See also pg_get_pid()
Example#1 PostgreSQL NOTIFY message
<?php
$conn = pg_pconnect ("dbname=publisher");
if (!$conn) {
echo "An error occured.\n";
exit;
}
// Listen 'author_updated' message from other processes
pq_query($conn, 'LISTEN author_updated;');
$notify = pg_get_notify($conn);
if (!$notify)
print("No messages\n");
else
print_r($notify);
?>