FAQ
Edit report at https://pear.php.net/bugs/bug.php?id=21072&edit=1

ID: 21072
Summary: Allow calculateTotalsFor() to parse formatted numbers
Status: Open
Type: Feature/Change Request
Package: Console_Table
Operating System: irrelevant
Package Version: 1.3.0
PHP Version: Irrelevant
New Comment:

I should have said "also incorporates the trivial fix ..." as both are
in there.

------------------------------------------------------------------------

[2016-05-31 15:13:45] bmcdanel

bug:21072;patch:bmcdanel-calculateTotalsFor;revision:1464722025;.

------------------------------------------------------------------------

[2016-05-31 15:11:57] bmcdanel

Description:
------------
When a filter is applied it will be processed before
calculateTotalsFor() is processed. This can be a good thing as
numbers can be altered during
the format stage. If calculateTotalsFor() was processed first
then 2+2=5 could happen for large values of 2 and a formatting
stripping the
fractional part (eg float to int).

A simple method that requires you to specify or use a default
can be found at https://gist.github.com/msng/1504235
calculateTotalsFor() could take additional optional parameters
that would specify the additional data or it could be set
somewhere else.

Below I try to explain the challenge to unformatting a number
without knowing what the integral separator and decimal
separator are. I think
that it will largely push towards having the user just declare it
based on the data they presumably know the format for.

There are 3 main categories for numbers. Sign, integral part,
decimal part. Some examples of different formatting styles can
be found at
https://en.wikipedia.org/wiki/Decimal_mark#Examples_of_use

SIGN
This can be a variety of things.
+123 = 123
123 = 123
-123 = -123
123- = -123
(123) = -123
%r123 = -123 (color formatting, red)

FRACTIONAL PART
This is often one of two characters a comma or a full stop
(period). There is never more than one fractional separator
however with an integer it
may not be present.

INTEGRAL PART
This can be one of several characters. a comma, space, full
stop, ' (in a couple styles). There may be more I am unaware
of. It may or may not
be present, and groupings may be 2, 3 or 4 digits. It will
always be left of the fractional separator except when it is not
(eg right to left
languages like those in the Middle East).

You cannot programmatically parse all numbers.
1.000 could be 1000 or it could be 1 unless you know the
fractional separator and the integral separator ahead of time.
You cannot rely on the system locale as it may be serving data
intended for someone using a different locale

SCIENTIFIC NOTATION and other numerical schemes
outside the scope for this, although it could be added easily
enough.

My patch incorporates the trivial fix for
https://pear.php.net/bugs/bug.php?id=21070

------------------------------------------------------------------------

## Related Discussions

 view thread | post posts ‹ prev | 1 of 1 | next ›
Discussion Overview
 group pear-bugs categories php posted May 31, '16 at 7:14p active May 31, '16 at 7:14p posts 1 users 1 website pear.php.net

### 1 user in discussion

Content

People

Support

Translate

site design / logo © 2022 Grokbase