From:             sean at wdsolutions dot com
Operating system: Linux
PHP version:      5.2.9
PHP Bug Type:     Feature/Change Request
Bug description:  SORT_VERSION for sort functions

Description:
------------
It would be awesome to have a SORT_VERSION flag for the sort family of
functions, whose behavior would be to sort most common multi-number version
strings (with possible support for detecting -cvs, -rc, -svn, and other
suffixes).

For example, SORT_NUMERIC and SORT_STRING both fail to properly sort the
following version numbers:

1.2.1
1.2.2
1.2.10
1.20.5
1.22.50

They get sorted as:

1.20.5
1.2.1
1.2.10
1.2.2
1.22.50

Code I used to work around it is below:

Reproduce code:
---------------
function vercmp($a, $b) {
  $as = explode('.', $a);
  $bs = explode('.', $b);
  for ($i = 0, $e = max(count($as), count($bs)); $i != $e; ++$i) {
    if ($as[$i] < $bs[$i])
      return -1;
    elseif ($as[$i] > $bs[$i])
      return 1;
  }
  return 0;
}



-- 
Edit bug report at http://bugs.php.net/?id=48305&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        
http://bugs.php.net/fix.php?id=48305&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        
http://bugs.php.net/fix.php?id=48305&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        
http://bugs.php.net/fix.php?id=48305&r=trysnapshot60
Fixed in CVS:                        
http://bugs.php.net/fix.php?id=48305&r=fixedcvs
Fixed in CVS and need be documented: 
http://bugs.php.net/fix.php?id=48305&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=48305&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=48305&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=48305&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=48305&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=48305&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=48305&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=48305&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=48305&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=48305&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=48305&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=48305&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=48305&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=48305&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=48305&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=48305&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=48305&r=mysqlcfg

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