Object Aggregation
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Object Aggregation 函数

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Object Aggregation
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PHP手册
PHP手册 - N: Object Aggregation 函数

用户评论:

kencomer at NOSPAM dot kencomer dot com (20-Sep-2005 05:04)

For PHP5 applications, the all of the "aggregate" function family is now in runkit.

  http://php.net/manual/en/ref.runkit.php

Jeb. (17-Jan-2003 10:18)

It is worth noting that class association does not work, even in PHP 4.3.0 - this ability is experimental. I'm assuming it was added in for the sake of forwards-compatibilty. Use object association instead for now.

Until it is implemented, you will receieve a parse error when attempting to use it.

Related bug report: http://bugs.php.net/bug.php?id=20531

Just to prevent people posting about "why it doesn't work??", etc etc etc.

Greg Beaver firstname at chiaraquartet dot net (04-Jan-2003 11:54)

If you need to serialize an object for sessions or other purposes, and want to save aggregation state, extend it from a base class such as this one, and use $this->agg/$this->unagg instead of aggregate/deaggregate

<?php
class base
{
    var
$_aggregates = array();
   
    function
agg($agg)
    {
       
aggregate($this,$agg);
       
$this->_aggregates[$agg] = 1;
    }
   
    function
unagg($agg = false)
    {
        if (
$agg)
        {
            
deaggregate($this,$agg);
             unset(
$this->_aggregates[$agg]);
        } else
        {
            
deaggregate($this);
           
$this->_aggregates = array();
        }
    }
}
?>