ThinkPHP的N方法属于计数器方法,被用于核心的查询、缓存统计的计数和统计。但是其实可以用于应用的其他计数用途,用法比较简单,调用格式:
N('计数位置'[,'步进值'])
例如,我们要统计页面中的查询次数,可以用
N('read',1);
表示每次执行到该位置都会引起计数器加1,到页面结束之前,我们就可以用
$count = N('read');
来统计当前页面执行的查询数目。
如果你希望计数器每次增加5,那么可以改变步进值,例如:
N('score',5);
需要注意的是,N方法页面执行完毕后的统计结果不会带入下次统计。

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