(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
pg_ping — Ping 数据库连接
connectionAn PgSql\Connection instance.
When connection is null, the default connection is used.
The default connection is the last connection made by pg_connect()
or pg_pconnect().
As of PHP 8.1.0, using the default connection is deprecated.
成功时返回 true， 或者在失败时返回 false。
| 版本 | 说明 |
|---|---|
| 8.1.0 |
现在 connection 参数接受 PgSql\Connection
实例，之前接受 resource。
|
| 8.0.0 |
connection 现在可为 null。
|
示例 #1 pg_ping() 示例
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.\n";
exit;
}
if (!pg_ping($conn))
die("Connection is broken\n");
?>