From: [EMAIL PROTECTED]
Operating system: linux 2.2.20, linux 2.4.19
PHP version: 4.2.3
PHP Bug Type: Scripting Engine problem
Bug description: echo 'foo'==0 ? 'is true ' : 'is false ' outputs 'is true'
sorry, im really not sure if this is a kind of bug or if i'm getting
something wrong: the two lines
echo 'foo'==0 ? 'is true ' : 'is false ';
if('bar'==0) echo 'is true '; else echo 'is false ';
will output:
is true is true
i dont understand why 'foo'==0 returns true.
the way i understand the manual, php should consider 'foo' a nonempty
string and 0 a zero integer. even if it would do a boolean comparison,
according to the manual 'foo' should be juggled to true and 0 should be
juggled to false. how can 'foo'==0 return true? have i missed something?
i hope i do not resubmit a known issue, i tried some queries but i really
didnt know how to lookup this issue.
this happens with variables as well. i ran into this problem in my
programming when comparing array keys that could be numeric or string. a 0
array key compared against any nonempty string array key always returned
true. it took me a while to find out that's why my program didnīt work the
way i thought it should.
i hope this is not something that happens only to me, but i have tested
the two lines on three different boxes before writing to you.
my configure line:
./configure' '--with-mysql=/usr/local/mysql'
'--with-apache=../apache_1.3.26' '--enable-ftp'
'--with-zlib-dir=/usr/lib'
Best regards,
wolfgang
--
Edit bug report at http://bugs.php.net/?id=20708&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=20708&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=20708&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=20708&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=20708&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=20708&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=20708&r=support
Expected behavior: http://bugs.php.net/fix.php?id=20708&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=20708&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=20708&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=20708&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=20708&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=20708&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=20708&r=isapi
