ID: 28031
User updated by: yiwakiri at st dot rim dot or dot jp
Reported By: yiwakiri at st dot rim dot or dot jp
-Status: Feedback
+Status: Open
Bug Type: Scripting Engine problem
Operating System: Windows 2k, XP, 98
PHP Version: 4.3.6, 4.3.7-dev
New Comment:
Hi, wez
Why does it deceive as a problem of strtol()?
Although it is comparison of STRING and STRING,
Is it a problem if strtol() is called?
In Unix Like OS, it is not thought that strtol() is called.
Previous Comments:
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[2004-04-19 15:31:14] [EMAIL PROTECTED]
Most likely due to strtol() implementation in the M$ libc.
Try using the === operator or strcmp() instead.
(strings that look like numbers might be compared as numbers using the
== operator)
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[2004-04-19 15:11:06] postings-php-bug at hans-spath dot de
D:\PHP>ver
Microsoft Windows XP [Version 5.1.2600]
D:\PHP>lastest\php-cli -v
PHP 4.3.7-dev (cli) (built: Apr 19 2004 14:16:52)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies
D:\PHP>5.0.0RC1\php -v
PHP 5.0.0RC1 (cli) (built: Mar 18 2004 18:20:03)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.0RC1, Copyright (c) 1998-2004 Zend Technologies
D:\PHP>lastest\php-cli test\string_comparison.php 0x1 0x2
( '0x1' == '0x2' ) = bool(false)
D:\PHP>lastest\php-cli test\string_comparison.php 0d1 0d2
( '0d1' == '0d2' ) = bool(true)
D:\PHP>lastest\php-cli test\string_comparison.php 0d1x 0d2x
( '0d1x' == '0d2x' ) = bool(false)
D:\PHP>lastest\php-cli test\string_comparison.php 0d1 0dx1
( '0d1' == '0dx1' ) = bool(false)
D:\PHP>lastest\php-cli test\string_comparison.php 0d1 0xd1
( '0d1' == '0xd1' ) = bool(true)
D:\PHP>lastest\php-cli test\string_comparison.php 0d1 0xd2
( '0d1' == '0xd2' ) = bool(true)
D:\PHP>lastest\php-cli test\string_comparison.php d1 xd2
( 'd1' == 'xd2' ) = bool(false)
D:\PHP>lastest\php-cli test\string_comparison.php d1 xd1
( 'd1' == 'xd1' ) = bool(false)
D:\PHP>lastest\php-cli test\string_comparison.php 0e9 0xe4
( '0e9' == '0xe4' ) = bool(true)
D:\PHP>5.0.0RC1\php test\string_comparison.php 0e9 0xe4
( '0e9' == '0xe4' ) = bool(true)
I wonder why this hasn't been discovered before. All my currently
installed (win32) versions (4.3.[2346], 5.0.0RC1) suffer from this
problem.
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[2004-04-19 10:34:31] yiwakiri at st dot rim dot or dot jp
Hmm, I'm confused.
Windows(2k, XP 98):
C:\>php -r "var_dump('0d1' == '0d2');" (1)
bool(true)
C:\>php -r "var_dump('00d1' == '00d2');" (2)
bool(false)
C:\>php -r "var_dump('0a1' == '0a2');" (3)
bool(false)
Unix like OS:
% php -r "var_dump('0d1' == '0d2');" (4)
bool(false)
% php -r "var_dump('0a1' == '0a2');" (5)
bool(false)
Only (1) does not bring a result to expect.
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[2004-04-19 02:24:43] yiwakiri at st dot rim dot or dot jp
A snapshot is also the same behavior.
C:\>php -v
PHP 4.3.7-dev (cli) (built: Apr 17 2004 10:21:09)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2003 Zend Technologies
C:\>php -r "var_dump(('0d1' == '0d2'));"
bool(true)
------------------------------------------------------------------------
[2004-04-17 15:24:52] postings-php-bug at hans-spath dot de
[Windows XP Pro SP1]
D:\PHP>4.3.2\php-cli -r "var_dump(('0d1' == '0d2'));"
bool(true)
D:\PHP>4.3.3\php-cli -r "var_dump(('0d1' == '0d2'));"
bool(true)
D:\PHP>4.3.4\php-cli -r "var_dump(('0d1' == '0d2'));"
bool(true)
D:\PHP>4.3.6\php-cli -r "var_dump(('0d1' == '0d2'));"
bool(true)
D:\PHP>php4-win32-STABLE-latest\php-cli -r "var_dump(('0d1' ==
'0d2'));"
bool(true)
D:\PHP>php4-win32-STABLE-latest\php-cli -v
PHP 4.3.7-dev (cli) (built: Apr 17 2004 14:18:37)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies
[Linux 2.6.5]
[EMAIL PROTECTED]:~/compile/php-4.3.6% sapi/cli/php -r "var_dump(('0d1' ==
'0d2'));"
bool(false)
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