(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)
pg_ping — Ping 数据库连接
connection
An 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.
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");
?>