Req #51345 [NEW]: Ability to override the hash function used by SplObjectStorage

From: Date: Sun, 21 Mar 2010 18:55:35 +0000
Subject: Req #51345 [NEW]: Ability to override the hash function used by SplObjectStorage
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-148811@lists.php.net to get a copy of this message 
From:             
Operating system: CentOS v5
PHP version:      5.3.2
Package:          SPL related
Bug Type:         Feature/Change Request
Bug description:Ability to override the hash function used by SplObjectStorage

Description:
------------
SplObjectStorage will be a lot more useful if I could override the hash
function 
it uses, so different objects which are really equal will be recognized as
such by 
SplObjectStorage.

While I currently do this by jumping through a few hoops, this will be a
welcome 
addition. A __hashCode() magic method can accomplish this easily.

Test script:
---------------
Pseudo-code:
<?
class StockSecurity {
	public $exchange;
	public $ticker;
	
	public function __hashCode() {
		return $this->exchange . ":" . $this->ticker;
	}
}

$d = new SplObjectStorage();
$s = new StockSecurity( 'NASDAQ', 'GOOG' );
$d->attach( $s, getStockQuote( $s ) );

// later on, in a different method
$s = new StockSecurity( 'NASDAQ', 'GOOG' );
$quote = $d[ $s ];


-- 
Edit bug report at http://bugs.php.net/bug.php?id=51345&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51345&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51345&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51345&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51345&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51345&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51345&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51345&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51345&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51345&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51345&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51345&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51345&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51345&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51345&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51345&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51345&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51345&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51345&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51345&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51345&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51345&r=mysqlcfg

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