php - PHP如何四舍五入

Question

我对在 PHP 中使用 round 函数感到困惑，我在我的系统中使用 PHP 做了一些计算函数，但答案仍然没有四舍五入。

我希望所有的总数都在已经四舍五入的percent_complete中。

有人可以帮我修复此代码吗？这是原始代码..

<?php echo $row_sr1['percent_complete'] = ($row_sr1['partial_complete'] + $row_sr1['full_complete']) / $row_sr1['appt_today'] * 100;?>

这是我尝试四舍五入但不成功的代码。

<?php echo round($row_sr1['percent_complete']),2 = ($row_sr1['partial_complete'] + $row_sr1['full_complete']) / $row_sr1['appt_today'] * 100;?>

Answer 1

您的 round 函数在错误的位置。

<?php
  echo $row_sr1['percent_complete'] =
         round(
           ($row_sr1['partial_complete'] + $row_sr1['full_complete']) /
             $row_sr1['appt_today'] * 100,
           2);
?>