pg_get_notifypg_get_pid
(PHP 4 >= 4.3.0, PHP 5)
pg_get_pid — Ping 数据库连接
说明
int pg_get_pid
( resource
$connection
)pg_get_pid() 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。
Example #1 PostgreSQL 后端 PID
<?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);
?>
参见 pg_get_notify()。
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