#39126 [NEW]: String->float->String conversion behavior

[bobson at rpg dot pl]

From: bobson at rpg dot pl
Operating system: Linux
PHP version: 5CVS-2006-10-11 (snap)
PHP Bug Type: Unknown/Other Function
Bug description: String->float->String conversion behavior

Description:
------------
When converting to float from string, its always use "." as a decimal
separator, but echo shows decimal separator using locale definition.
Because of that there's a problem eg. in dbase function on numeric(float)
fields.

Reproduce code:
---------------
setlocale(LC_ALL,"pl_PL");
echo '1.2*1=';
echo "1.2"*1;
//produce 1.2*1=1,2
echo '1,2*1=';
echo "1,2"*1;
//produce 1,2*1=1 <- this was expected to produce 1,2 float on pl_PL (in
PL decimal separator is ",")

setlocale(LC_ALL,"en_EN");
echo '1.2*1=';
echo "1.2"*1;
//produce 1.2*1=1.2
echo '1,2*1=';
echo "1,2"*1;
//produce 1,2*1=1 <- correct on en_EN

//the most ugly examlpe
setlocale(LC_ALL,"pl_PL");
echo (("1.2"*1)."")*1; //produce 1
echo (("1,2"*1)."")*1; //also produce 1


Expected result:
----------------
on pl_PL
1
1,2

on en_EN
1.2
1

last one example code:
1
1,2

Actual result:
--------------
on pl_PL
1,2
1

on en_EN
1.2
1

last one example code:
1
1

--
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[tony2001@php.net]

ID: 39126
Updated by: [email]tony2001@php.net[/email]
Reported By: bobson at rpg dot pl
-Status: Open
+Status: Bogus
Bug Type: Unknown/Other Function
Operating System: Linux
PHP Version: 5CVS-2006-10-11 (snap)
New Comment:

The output may differe depending on your localem but the input must
always be the same, otherwise your script would not work on servers
with different locales.


Previous Comments:
------------------------------------------------------------------------

[2006-10-11 15:32:13] bobson at rpg dot pl

Description:
------------
When converting to float from string, its always use "." as a decimal
separator, but echo shows decimal separator using locale definition.
Because of that there's a problem eg. in dbase function on
numeric(float) fields.

Reproduce code:
---------------
setlocale(LC_ALL,"pl_PL");
echo '1.2*1=';
echo "1.2"*1;
//produce 1.2*1=1,2
echo '1,2*1=';
echo "1,2"*1;
//produce 1,2*1=1 <- this was expected to produce 1,2 float on pl_PL
(in PL decimal separator is ",")

setlocale(LC_ALL,"en_EN");
echo '1.2*1=';
echo "1.2"*1;
//produce 1.2*1=1.2
echo '1,2*1=';
echo "1,2"*1;
//produce 1,2*1=1 <- correct on en_EN

//the most ugly examlpe
setlocale(LC_ALL,"pl_PL");
echo (("1.2"*1)."")*1; //produce 1
echo (("1,2"*1)."")*1; //also produce 1


Expected result:
----------------
on pl_PL
1
1,2

on en_EN
1.2
1

last one example code:
1
1,2

Actual result:
--------------
on pl_PL
1,2
1

on en_EN
1.2
1

last one example code:
1
1


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


--
Edit this bug report at [url]http://bugs.php.net/?id=39126&edit=1[/url]

[bobson at rpg dot pl]

ID: 39126
User updated by: bobson at rpg dot pl
Reported By: bobson at rpg dot pl
Status: Bogus
Bug Type: Unknown/Other Function
Operating System: Linux
PHP Version: 5CVS-2006-10-11 (snap)
New Comment:

Yes and no in fact.
Using the same decimal separator on all platform is nice but-
When you using input from browser (POST) in Poland you will get "," as
decimal separator when someone type from numeric keypad.
Second:
Try to read dbase file with numeric(4,2) field and float value in it.
Set locale to "pl_PL" first. Because of float->string translation using
locale you will never get float from that numeric (because dbase reading
procedure make float->string->float convert. float->string using locale.
string->float without using locale. It makes value truncated to integer
part of it).


Previous Comments:
------------------------------------------------------------------------

[2006-10-11 15:59:45] [email]tony2001@php.net[/email]

The output may differe depending on your localem but the input must
always be the same, otherwise your script would not work on servers
with different locales.

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

[2006-10-11 15:32:13] bobson at rpg dot pl

Description:
------------
When converting to float from string, its always use "." as a decimal
separator, but echo shows decimal separator using locale definition.
Because of that there's a problem eg. in dbase function on
numeric(float) fields.

Reproduce code:
---------------
setlocale(LC_ALL,"pl_PL");
echo '1.2*1=';
echo "1.2"*1;
//produce 1.2*1=1,2
echo '1,2*1=';
echo "1,2"*1;
//produce 1,2*1=1 <- this was expected to produce 1,2 float on pl_PL
(in PL decimal separator is ",")

setlocale(LC_ALL,"en_EN");
echo '1.2*1=';
echo "1.2"*1;
//produce 1.2*1=1.2
echo '1,2*1=';
echo "1,2"*1;
//produce 1,2*1=1 <- correct on en_EN

//the most ugly examlpe
setlocale(LC_ALL,"pl_PL");
echo (("1.2"*1)."")*1; //produce 1
echo (("1,2"*1)."")*1; //also produce 1


Expected result:
----------------
on pl_PL
1
1,2

on en_EN
1.2
1

last one example code:
1
1,2

Actual result:
--------------
on pl_PL
1,2
1

on en_EN
1.2
1

last one example code:
1
1


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


--
Edit this bug report at [url]http://bugs.php.net/?id=39126&edit=1[/url]