Edit report at https://bugs.php.net/bug.php?id=65589&edit=1
ID: 65589
Comment by: gautam dot nishchal at gmail dot com
Reported by: wwwgying at qq dot com
Summary: PHP Language BUG
Status: Not a bug
Type: Bug
Package: Scripting Engine problem
Operating System: Windows/Mac/Linux
PHP Version: 5.5.3
Block user comment: N
Private report: N
New Comment:
Yep, there's a bug, but way of expressing is wrong, expected output is 3,2 but
gives you 3,3
Previous Comments:
------------------------------------------------------------------------
[2013-10-06 08:48:20] gautam dot nishchal at gmail dot com
Expected result is int(3) int(2) I suggest you to read about pre and post
increment / decrement :p
------------------------------------------------------------------------
[2013-10-06 08:44:47] gautam dot nishchal at gmail dot com
And who tells the program gives int(3) int(3)? I just wrote a program in C
which gave me 3 and 2,
#include <stdio.h>
int main()
{
int a, c;
a=1;
c=a+a+a++;
printf("%d\n",c);
a=1;
c=a+a++;
printf("%d", c);
}
This program prints 3 2 not 3 3
------------------------------------------------------------------------
[2013-10-06 08:35:00] gautam dot nishchal at gmail dot com
I would like to say something to reporter, i think that's a post increment
expression which will give int(3) int(3). That's not bug...
------------------------------------------------------------------------
[2013-08-30 20:45:11] ahar...@php.net
This is undefined behaviour in PHP, as in most languages with C-derived
syntaxes.
Mailing list discussion from last month:
http://marc.info/?t=137427934300002&r=1&w=2
This is also documented, see example 1 on:
http://www.php.net/manual/en/language.operators.precedence.php
------------------------------------------------------------------------
[2013-08-30 08:17:54] wwwgying at qq dot com
Description:
------------
<?php
$a=1;
$c=$a+$a+$a++;
var_dump($c);
$a=1;
$c=$a+$a++;
var_dump($c);
?>
we will get int(3) int(3)
and the same code,php result is not the same with other program languages.
Test script:
---------------
<?php
$a=1;
$c=$a+$a+$a++;
var_dump($c);
$a=1;
$c=$a+$a++;
var_dump($c);
?>
Expected result:
----------------
int(3) int(3)
Actual result:
--------------
int(3) int(2)
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=65589&edit=1
