(PHP 4, PHP 5, PHP 7, PHP 8)
pg_close — 关闭一个 PostgreSQL 连接
$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。
connection
PostgreSQL database connection resource. When
connection is not present, the default connection
is used. The default connection is the last connection made by
pg_connect() or pg_pconnect().
成功时返回 true， 或者在失败时返回 false。
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
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