From: php at dafydd dot com
Operating system: Mac/Doesn't matter
PHP version: 5.2.5
PHP Bug Type: Feature/Change Request
Bug description: Allow switch() to track multiple variables.
Description:
------------
In writing with PHP, I have frequently come across situations where I
would have to nest switch() functions. So, I thought of an alternative.
Reproduce code:
---------------
Current code:
Suppose I have one variable limited to four specific values, and a second
variable that identifies whether or not the first variable can be changed.
Right now, I have to do this:
switch ($value) {
case 'a':
switch ($access) {
case 'read-only':
case 'read-write':
}
case 'b':
switch ($access) {
case 'read-only':
case 'read-write':
}
case 'c':
switch ($access) {
case 'read-only':
case 'read-write':
}
case 'd':
switch ($access) {
case 'read-only':
case 'read-write':
}
}
Expected result:
----------------
Instead of doing that, how about changing switch to track multiple
variables. Perhaps like this:
switch ($value, $access) {
case ('a', 'read-only'):
case ('a', 'read-write'):
case ('a', default):
case ('b', 'read-only'):
case ('b', 'read-write'):
case ('b', default):
case ('c', 'read-only'):
case ('c', 'read-write'):
case ('c', default):
case ('d', 'read-only'):
case ('d', 'read-write'):
case ('d', default):
case (default, default):
}
This would reduce repetition in coding!
Actual result:
--------------
I fully anticipate that this would be an "incorporate into PHP 7" class of
new feature.
--
Edit bug report at http://bugs.php.net/?id=44298&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=44298&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=44298&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=44298&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=44298&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=44298&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=44298&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=44298&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=44298&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=44298&r=support
Expected behavior: http://bugs.php.net/fix.php?id=44298&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=44298&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=44298&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=44298&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44298&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=44298&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=44298&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=44298&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=44298&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=44298&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=44298&r=mysqlcfg
