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