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帮忙瞧个源码

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2016-06-13 11:27:37846browse

帮忙看个源码

<html><br /><head><br /><br /></head><body><br /><?php<br /><br /><br />$filename = 'english.dat'; //数据文件名<br />$refresh = 1; //更新周期（以秒为单位，可根据需要自行调整）<br />$data = file($filename); //将数据文件装入一个数组<br />$num_lines = count($data); //数据文件行数，也就是记录条数 <br />mt_srand(floor(time() / $refresh));<br />$id = mt_rand(0, $num_lines - 1); //随机选择一条记录号<br />$content = chop($data[$id]); //根据记录号选择相应的数据，并截去最后的换行符<br />echo $content; //用javascript形式输出数据<br /><br /><br />?><br /><br /></body><br /></html>

这个是我从网上找到定时更新页面的源码，我想问下这个实现定时功能就是没有注释那段是什么意思，我不是很理解。

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