php连接与操作PostgreSQL数据库的方法

$pg=@pg_connect("host=localhost user=postgres password=sa dbname=employes")
or die("can't connect to database.");
$query="select from employes order by serial_no";
//$query="insert into employes values(10008,'susan','1985-09-04','80','50')";
$result=@pg_query($pg,$query) or die("can't run query to table.");
//echo pg_num_rows($result); //输出多少条记录被查询
//if($result)
//{
//echo "recrods inserted sucessfully!";
//echo pg_affected_rows($result);//输出多少条记录被插入
/