PHP website statistics simple version, text database

Realize total visits, visits this month, yesterday's visits, today's visits statistics, use text storage, simple and easy to use
Automatically create a text database and save this php in the same directory. The display effect is as shown below:

Calling method:
<?php <code class="prettyprint linenums lang-php"><?php <br /> error_reporting(0);<br> header ( "Content-type: text/html; charset=utf-8" );<br> //设置数据文件路径<br> $file = dirname(__FILE__).'/tongji.db';<br> $data = unserialize(file_get_contents($file));<br> //设置记录键值<br> $total = 'total';<br> $month = date('Ym');<br> $today = date('Ymd');<br> $yesterday = date('Ymd',strtotime("-1 day"));<br> $tongji = array();<br> // 总访问增加<br> $tongji[$total] = $data[$total]   1;<br> // 本月访问量增加<br> $tongji[$month] = $data[$month]   1;<br> // 今日访问增加<br> $tongji[$today] = $data[$today]    1;<br> //保持昨天访问<br> $tongji[$yesterday] = $data[$yesterday];<br> //保存统计数据<br> file_put_contents($file, serialize($tongji));<br> //输出数据<br> $total = $tongji[$total];<br> $month = $tongji[$month];<br> $today = $tongji[$today];<br> $yesterday = $tongji[$yesterday]?$tongji[$yesterday]:0;<br> echo  "document.write('总访问 {$total}, 本月 {$month}, 昨日 {$yesterday}, 今日 {$today}');"; error_reporting(0);

header ( "Content-type: text/html; charset=utf-8" );

//Set data file path $file = dirname(__FILE__).'/tongji.db'; $data = unserialize(file_get_contents($file)); //Set record key value $total = 'total'; $month = date('Ym'); $today = date('Ymd'); $yesterday = date('Ymd',strtotime("-1 day")); $tongji = array(); // Total visits increased $tongji[$total] = $data[$total] 1; // Increased visits this month $tongji[$month] = $data[$month] 1; // Increased visits today $tongji[$today] = $data[$today] 1; //Keep yesterday’s visit $tongji[$yesterday] = $data[$yesterday]; //Save statistics file_put_contents($file, serialize($tongji)); //Output data $total = $tongji[$total]; $month = $tongji[$month]; $today = $tongji[$today]; $yesterday = $tongji[$yesterday]?$tongji[$yesterday]:0; echo "document.write('Total visits {$total}, this month {$month}, yesterday {$yesterday}, today {$today}');"; Yunqi Conference Beijing Station: It’s rare for Alibaba’s technical experts to appear on camera. More than 100 of them came this time? !