discuz x1.5 关闭SQL语句的方法是什么？

Discuz! X1 config_global.php配置注解手册

<?php

$_config = array();

$_config['db'][1]['dbhost']                 ='localhost';               //服务器地址
$_config['db'][1]['dbuser']                 ='root';               //用户
$_config['db'][1]['dbpw']                 ='root';               //密码
$_config['db'][1]['dbcharset']                ='gbk';               //字符集
$_config['db'][1]['pconnect']                =0;                       //是否持续连接
$_config['db'][1]['dbname']                 ='ultrax';               //数据库
$_config['db'][1]['tablepre']                ='pre_';               //表名前缀
$_config['memory']['prefix'] = 'discuz_';
$_config['memory']['eaccelerator'] =1;                               //启动对 eaccelerator 的支持
$_config['memory']['xcache'] =1;                               //启动对 xcache 的支持
$_config['memory']['memcache']['server'] ='';                       //memcache 服务器地址
$_config['memory']['memcache']['port'] =11211;                       //memcache 服务器端口
$_config['memory']['memcache']['pconnect'] =1;                       //memcache 是否长久连接
$_config['memory']['memcache']['timeout'] =1;                       //memcache 服务器连接超时