说明
int 
pg_connection_status ( resource connection )
     pg_connection_status() 返回一个连接的状态。可能的状态为
     PGSQL_CONNECTION_OK 和 PGSQL_CONNECTION_BAD。
    
     
| 例子 1. pg_connection_status() 例子 | 
<?php$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
 $stat = pg_connection_status($dbconn);
 echo 'connection_status: '.$stat;
 ?>
 | 
 | 
    
     
| 例子 2. pg_connection_status() 例子 | 
<?php$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
 $stat = pg_connection_status($dbconn);
 echo 'connection_status: '.$stat;
 ?>
 | 
 | 
    
     参见 pg_connection_busy()。