如何舍入小数？

Question

How can I use round() to round a number to the superior number as soon as there is a decimal?

For example:

1.00001      = 2
1.1          = 2
1.4785834975 = 2
1.00         = 1
1.99         = 2
3.01         = 4

Answer 1

Yes, what you are looking for is called ceil

<?php
echo ceil(4.3);    // 5
echo ceil(9.999);  // 10
echo ceil(-3.14);  // -3
?>

Answer 2

This might be helpful for you:

floor() will go down.

ceil() will go up.

round() will go to nearest by default.

<?php
echo ceil(3.4);    // 4
echo ceil(8.89);  // 9
?>