pg_close()
(PHP 4, PHP 5, PHP 7)
关闭一个 PostgreSQL 连接
说明
pg_close([resource $connection]): bool
pg_close()关闭由所给资源$connection指定的到 PostgreSQL 数据库的非持久连接。
Note:使用pg_close()并不很必要,因为非持久连接在本脚本执行结束后会自动关闭。
如果在此连接中打开了 large object 资源,则在关闭所有 large object 资源之前不要关闭连接。
参数
- $connection
PostgreSQL database connection resource. When$connectionis not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().
返回值
成功时返回TRUE
,或者在失败时返回FALSE
。
范例
Example #1 pg_close()例子
<?php $dbconn = pg_connect("host=localhost port=5432 dbname=mary") or die("Could not connect"); echo "Connected successfully"; pg_close($dbconn); ?>
以上例程会输出:
Connected successfully
参见
pg_connect()
打开一个 PostgreSQL 连接
pg_close(...) will not technically close a persistent connection but instead returns it back to the connection pool thus giving you the desired effect of having the connection closed within your script. http://www.sitepoint.com/article/accessing-postgresql-php/3 best wishes to all.
This function closes the current database connection specified by a handle returned from a pg_connect() call. <?php $pgsql_conn = pg_connect("dbname=mark host=localhost"); if ($pgsql_conn) { print "Successfully connected to: " . pg_host($pgsql_conn) . "<br/>\n"; } else { print pg_last_error($pgsql_conn); exit; } // Do database stuff here. if(!pg_close($pgsql_conn)) { print "Failed to close connection to " . pg_host($pgsql_conn) . ": " . pg_last_error($pgsql_conn) . "<br/>\n"; } else { print "Successfully disconnected from database"; } ?> Of course you normally wouldn't print a message. Regards, --mark