如果负数则舍入，如果正数php则舍入？

Question

Round up if negative round down if positive? I have

$rounded =1000

39528,65 round should be --> 39000

AND

-30965,77 --> -31000

Answer 1

use

UPDATE

$value= ($number>0)  ? floor($number) : ceil ($number);

reference
1. floor
2. ceil

Answer 2

Have a try with :

$rounded = 1000;
foreach(array(39528.65, -30965.77) as $num) {
  echo $num,' -> ', floor($num/$rounded)*$rounded,"\n";
}

output:

39528.65 -> 39000
-30965.77 -> -31000

Answer 3

A direct int cast seems do this job, if your rounding up/down means floor/ceil

echo (int)( 8.5/8); //  1 = floor( 8.5/8)
echo (int)(-8.5/8); // -1 =  ceil(-8.5/8)

Answer 4

You can use abs to get the absolute value, like so:

round(abs(-30965,77))

If your number is a negative, abs will return a positive. Otherwise it will return the positive number. You can then use round (with your desired precision) to round your value.