我希望数字有2位小数,因为它显示了所有十进制数。这是我的代码:
<?php
$add=mysqli_query($conn,'SELECT SUM(fil), SUM(math), SUM(aralp),
SUM(mapeh), SUM(esp), SUM(mtb), (SUM(total)/5), SUM(mps) from `grade1`');
while($row1=mysqli_fetch_array($add))
{
$mark=$row1['SUM(fil)'];
$mark3=$row1['SUM(math)'];
$mark4=$row1['SUM(aralp)'];
$mark5=$row1['SUM(esp)'];
$mark6=$row1['SUM(mapeh)'];
$mark7=$row1['SUM(mtb)'];
$mark9=$row1['(SUM(total)/5)'];
$mark10=$row1['SUM(mps)'];
}
?>
如何在此处插入round(2)
?
<?php
echo "<th></th><th>AVERAGE</th>";
echo "<th>$mark</th>";
echo "<th>$mark3</th>";
echo "<th>$mark4</th>";
echo "<th>$mark5</th>";
echo "<th>$mark6</th>";
echo "<th>$mark7</th>";
echo "<th>$mark9</th>";
echo "<th>$mark10</th>";
?>
提前谢谢!
答案 0 :(得分:-1)
这实际上是
echo "<th>".round($mark, 2)."</th>";
现在,我不得不面对另一个问题。