关闭指定的连接并释放相关资源。
注意:
下面的示例将关闭一个连接。此示例假定在本地计算机上已安装 SQL Server。从命令行运行此示例时，所有的输出都将写入控制台。
<?php
/*Connect to the local server using Windows Authentication and
specify the AdventureWorks database as the database in use. */
$serverName = "(local)";
$conn = sqlsrv_connect( $serverName);
if( $conn === false )
{
echo "Could not connect.\n";
die( print_r( sqlsrv_errors(), true));
}
//-----------------------------------------------
// Perform operations with connection here.
//-----------------------------------------------
/* Close the connection. */
sqlsrv_close( $conn);
echo "Connection closed.\n";
?>
