[PHP-BUG] Req #51469 [NEW]: why not Inner Classes?

From:             
Operating system: irrelevant
PHP version:      5.3.2
Package:          Class/Object related
Bug Type:         Feature/Change Request
Bug description:why not Inner Classes?

Description:
------------
hi, some object oriented architectures requires inner classes
i'm not good with english language so i write some examples:

in a library like PDO, now we can do some like this:

class Database
{
    public function prepareSql($sql){ return new Sql($sql)}
}

class Sql
{
    public function setValue($search, $replace){}
    public function executeQuery(){return new ExecutedQuery();}
}

class ExecutedQuery
{
    function fetch()
    function numRows()
    // etc
}

this api allows the developer to instantiate an ExecutedQuery with no Sql
parameters escaping (class Sql)

so inner classes are useful to make visible classes in some trusted
environment:

class Database
{
    public function prepareSql($sql){ return new Sql($sql)}

    class Sql
    {
        public function setValue($search, $replace){}
        public function executeQuery(){return new ExecutedQuery();}
        class ExecutedQuery
        {
            function fetch()
            function numRows()
            // etc
        }
    }
}

i've read a lot of rfc on php's wiki but no one talks about inner classes
(useful like traits and others new work in progress features)

what do you think about this?


-- 
Edit bug report at http://bugs.php.net/bug.php?id=51469&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51469&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51469&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51469&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51469&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51469&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51469&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51469&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51469&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51469&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51469&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51469&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51469&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51469&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51469&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51469&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51469&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51469&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51469&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51469&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51469&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51469&r=mysqlcfg