(PHP 4 >= 4.3.0, PHP 5)
pg_get_notify — Ping database connection
$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);
?>