echo可以指定一个浮点数吗？

Question

I can do this using printf()

printf ("Total amount of order is %.2f", $total);

Can I do the same using echo, or I have to use printf()?

Answer 1

You can use this..

$total= 100.123;
echo "Total amount of order is ". round($total, 2);

Output:

Total amount of order is 100.12