#33274 [Fbk->Opn]: Class extended from MySQLi mangles members on calling parent method

From: Date: Thu, 09 Jun 2005 10:51:52 +0000
Subject: #33274 [Fbk->Opn]: Class extended from MySQLi mangles members on calling parent method
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-80085@lists.php.net to get a copy of this message 
 ID:               33274
 User updated by:  flying dot mushroom at gmail dot com
 Reported By:      flying dot mushroom at gmail dot com
-Status:           Feedback
+Status:           Open
 Bug Type:         MySQLi related
 Operating System: Linux
 PHP Version:      5.0.3
 New Comment:

Yep; the CVS version (200506090830) fixes it, producing the expected
result.


Previous Comments:
------------------------------------------------------------------------

[2005-06-08 18:02:41] sniper@php.net

Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip



------------------------------------------------------------------------

[2005-06-08 12:27:00] flying dot mushroom at gmail dot com

Description:
------------
A class that extends mysqli, if passing its own members directly to the
parent constructor, will have those members mangled after the call.

Assigning member values to local variables and then passing those to
the parent solves the problem on for the user, but the above behaviour
shouldn't happen...?

(Replacing the line "parent::__construct($this->p_host, $this->p_uname,
$this->p_password);" with "parent::__construct($host, $username,
$password);" produces the expected result.)

This same problem is reported on the comment by hans at lintoo dot dk
on http://www.php.net/manual/en/ref.mysqli.php

Reproduce code:
---------------
<?php

class db_mysql extends mysqli
{
    private $p_host;
    private $p_uname = '';
    private $p_password = '';

    public function __construct($host, $username = '', $password = '')
    {
        $this->p_host     = $host;
        $this->p_uname    = $username;
        $this->p_password = $password;

        parent::__construct($this->p_host, $this->p_uname,
$this->p_password);
    }
}

var_dump(new db_mysql('localhost', 'username', 'password'));
?>

Expected result:
----------------
object(db_mysql)#1 (3) {
  ["p_host:private"]=>
  string(9) "localhost"
  ["p_uname:private"]=>
  string(8) "username"
  ["p_password:private"]=>
  string(8) "password"
}

Actual result:
--------------
object(db_mysql)#1 (3) {
  ["p_host:private"]=>
  string(9) "localhost"
  ["p_uname:private"]=>
  string(8) "username"
  ["p_password:private"]=>
  NULL
}


------------------------------------------------------------------------


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