(PHP 4, PHP 5, PHP 7, PHP 8)
pg_close — 关闭 PostgreSQL 连接
pg_close() 关闭与指定 connection
实例关联的 PostgreSQL 数据库的非持久连接。
注意:
通常不需要使用 pg_close()，因为打开的非持久连接会在脚本结束时自动关闭。
connectionAn PgSql\Connection instance.
When connection is null, the default connection is used.
The default connection is the last connection made by pg_connect()
or pg_pconnect().
As of PHP 8.1.0, using the default connection is deprecated.
总是返回 true。
| 版本 | 说明 |
|---|---|
| 8.2.0 |
现在返回类型为 true；之前是 bool。
|
| 8.1.0 |
现在 connection 参数接受 PgSql\Connection
实例，之前接受 resource。
|
| 8.0.0 |
connection 现在可以为 null。
|
示例 #1 pg_close() 示例
<?php
$dbconn = pg_connect("host=localhost port=5432 dbname=mary")
or die("Could not connect");
echo "Connected successfully";
pg_close($dbconn);
?>以上示例会输出：
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