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 receive notify
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
pg_query($conn, 'LISTEN author_updated;');
$notify = pg_get_notify($conn);
if (!$notify) {
echo "No messages\n";
} else {
print_r($notify);
}
?>
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