pg_free_resultpg_get_notify
(PHP 4 >= 4.3.0, PHP 5)
pg_get_notify — Gets SQL NOTIFY message
Opis
$connection
[, int $result_type
] )pg_get_notify() gets notifications generated by a NOTIFY SQL command. To receive notifications, the LISTEN SQL command must be issued.
Parametry
-
connection -
PostgreSQL database connection resource.
-
result_type -
An optional parameter that controls how the returned array is indexed.
result_typeis a constant and can take the following values:PGSQL_ASSOC,PGSQL_NUMandPGSQL_BOTH. UsingPGSQL_NUM, pg_get_notify() will return an array with numerical indices, usingPGSQL_ASSOCit will return only associative indices whilePGSQL_BOTH, the default, will return both numerical and associative indices.
Zwracane wartości
An array containing the NOTIFY message name and backend PID.
Otherwise if no NOTIFY is waiting, then FALSE is returned.
Przykłady
Przykład #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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User Contributed Notes
pg_get_notify