(PHP 4 >= 4.0.6, PHP 5, PHP 7)
fbsql_close — Close FrontBase connection
$link_identifier
] )Closes the connection to the FrontBase server that's associated with the specified link identifier.
Using fbsql_close() isn't usually necessary, as non-persistent open links are automatically closed at the end of the script's execution.
link_identifier由 fbsql_connect() 或 fbsql_pconnect() 返回的 FrontBase 链接标识符.
如可选并未指定，函数会尝试查找一个到 FrontBase 服务器的开放链接，且如没有找到这样的链接，会尝试通过不带参数调用 fbsql_connect() 来创建一个。
成功时返回 TRUE， 或者在失败时返回 FALSE。
Example #1 fbsql_close() example
<?php
$link = fbsql_connect("localhost", "_SYSTEM", "secret")
or die("Could not connect");
echo "Connected successfully";
fbsql_close($link);
?>