FUDforum
Fast Uncompromising Discussions. FUDforum will get your users talking.
Home » Imported messages » comp.lang.php » simple session question
Show: Today's Messages :: Polls :: Message Navigator
Return to the default flat view Create a new topic Submit Reply
Re: OT: and even in Dart .........Re: simple session question [message #175715 is a reply to message #175714] Sat, 22 October 2011 15:54 Go to previous messageGo to previous message
The Natural Philosoph is currently offline  The Natural Philosoph
Messages: 993
Registered: September 2010
Karma:
Senior Member
Luuk wrote:
> On 22-10-2011 17:08, Luuk wrote:
>> On 22-10-2011 16:37, The Natural Philosopher wrote:
>>> The Natural Philosopher wrote:
>>>> Luuk wrote:
>>>> > On 22-10-2011 01:32, The Natural Philosopher wrote:
>>>> >> try $foo=($foo++);
>>>> >>
>>>> >> But actually, why not just
>>>> >>
>>>> >> $foo+=1;
>>>> >
>>>> > Because they differ?
>>>> >
>>>> > $ php -r ' $foo=0; $foo=$foo++; print $foo."\n";'
>>>> > 0
>>>> > $ php -r ' $foo=0; $foo=($foo++); print $foo."\n";'
>>>> > 0
>>>>
>>>> That is surely a bug..
>>>>
>>>
>>> viz
>>>
>>> ~$ cat test.c
>>> #include <stdio.h>
>>> main()
>>> {
>>> int foo;
>>> foo=0;
>>> foo=(foo++);
>>> printf("%d\n",foo);
>>> }
>>> ~$ ./test
>>> 1
>>>
>>>
>>> I thought PHP followed C operator precedence exactly..
>>>
>>>
>>
>> it seems to follow PERL
>>
>> $ perl -e '$foo=0; $foo=$foo++; print $foo."\n";'
>> 0
>> $ perl -e '$foo=0; $foo=($foo++); print $foo."\n";'
>> 0
>> $ perl -e '$foo=0; $foo++; print $foo."\n";'
>> 1
>> $
>>
>>
>
> see: http://www.dartlang.org
>
> main() {
> int foo=0;
> foo=foo++;
> print('First test: ${foo}');
>
> foo=0;
> foo=(foo++);
> print('Second test: ${foo}');
>
> foo=0;
> foo++;
> print('Third test: ${foo}');
>
> }
>
> which gives:
> First test: 0
> Second test: 0
> Third test: 1
>
>

still a bug in PHP where

"Parentheses may be used to force precedence, if necessary. For
instance: (1 + 5) * 3 evaluates to 18"

(from the manual)

I THOUGHT the general rule was that the value of (entity) was always the
FINAL value after ALL internal operations had been carried out.

Agreed its a crappy way to code, which is probably why no one has
noticed it.

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: session cookie: client side
Next Topic: by get this format my explode file name like this through php
Goto Forum:
  

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ]

Current Time: Thu Nov 07 20:04:43 GMT 2024

Total time taken to generate the page: 0.05407 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.3.
Copyright ©2001-2023 FUDforum Bulletin Board Software