pg_ping
(PHP 4 >= 4.3.0, PHP 5)
pg_ping — Ping database connection
說明
bool pg_ping
([ resource $connection
] )
pg_ping() pings a database connection and tries to reconnect it if it is broken.
參數
- connection
-
PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().
Return值
如果成功則回傳 TRUE，失敗則回傳 FALSE。
範例
Example#1 pg_ping() example
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occured.\n";
exit;
}
if (!pg_ping($conn))
die("Connection is broken\n");
?>