| Mathmatical Question
Rounding Numbers Down and Up |
stuart
msg:1298566 | 8:50 pm on May 13, 2003 (gmt 0) |
Hi, Does anyone know the maths to round down or up 2 numbers, to the nearest 0 or 5, to achieve a price range as follows: ie: £131(1st number) to 174(2nd number) = £130 to 175
ie: £136(1st number) to 179(2nd number) = £135 to 180
...etc, I was thinking along the following lines but someone said its best done mathematically: if 0 = 0
if 5 = 5
1st number:
if last digit is 1, 2, 3, 4 = 0
if last digit is 6, 7, 8, 9, = 5
2nd number:
if last digit is 1, 2, 3, 4 = 5
if last digit is 6, 7, 8, 9, = 0 Does that make sense? If so, any ideas?
TIA
stuart
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ruserious
msg:1298567 | 9:05 pm on May 13, 2003 (gmt 0) |
Use [php.net...] If its only for displaying use [php.net...] sprintf("%.2f", $price);
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mischief
msg:1298568 | 5:56 am on May 14, 2003 (gmt 0) |
42! ruserious has answered you perfectly, but for future reference the ceil() and floor() functions might be of interest: [php.net ]
[php.net ]
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ShawnR
msg:1298569 | 7:42 am on May 14, 2003 (gmt 0) |
I must be running slow today, or maybe I haven't had my coffee yet. I don't get how you can get sprintf do what you need. Same with round, ceil, or floor unless they are coupled with a division then multiplication again. I'd suggest the following: first number: floor($lower_price/5) * 5
second number: ceil($upper_price/5) * 5 Shawn
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stuart
msg:1298570 | 12:02 pm on May 14, 2003 (gmt 0) |
Many thanks for your replies all. Much appreciated.
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