php-bugs

From: milahu89 at web dot de
Operating system: irrelevant
PHP version: 5.0.5
PHP Bug Type: Math related
Bug description: new function: sgn()

Description:
------------
not really a bug, but i'd like to suggest a new math-function sgn().
it would make comparison of integer values much easier (an nicer, of
course ).
i've attached an example in the srccode part.

Reproduce code:
---------------
<?php
// comparison with if/else :
if($a < $b) print("a < b");
elseif($a == $b) print("a == b");
else print("a > b");

// comparison with sgn() :
function sgn($int) {
if($int > 0) return 1;
if($int < 0) return -1;
return 0;
}
switch(sgn($a-$b)){
case 1: print("a > b");
case 0: print("a == b");
case -1: print("a < b");
}
?>

Expected result:
----------------
depends

Actual result:
--------------
depends ...

--
Edit bug report at http://bugs.php.net/?id=35025&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35025&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=35025&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=35025&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=35025&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=35025&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=35025&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=35025&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=35025&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=35025&r=support
Expected behavior: http://bugs.php.net/fix.php?id=35025&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=35025&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=35025&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=35025&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35025&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=35025&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=35025&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=35025&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=35025&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=35025&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=35025&r=mysqlcfg