pg_get_pid
(PHP 4 >= 4.3.0, PHP 5)
pg_get_pid — Ping 数据库连接
<h3>说明</h3>
int <strong>pg_get_pid</strong>
( resource <code>$connection</code>
)
<p>
<strong>pg_get_pid()</strong> 取得后端（数据库服务器进程）的
PID。PID 用来检查其它进程是否发送了
NOTIFY 消息。
</p>
<p>
<p><strong>Example #1 PostgreSQL 后端 PID</strong></p><?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occured.n";
exit;
}
// Backend process PID. Use PID with pg_get_notify()
$pid = pg_get_pid($conn);
?>
</p>
<p>
参见 pg_get_notify()。
</p>