note 35258 added to language.types.object
| From: | info at rack1 dot php dot net | Date: | Mon, 25 Aug 2003 19:26:40 +0000 |
| Subject: | note 35258 added to language.types.object | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-55059@lists.php.net to get a copy of this message | ||
PHP supports recursive type definitions as far as I've tried. The class below (a _very_ simple
tree) is an example:
class Tree {
var $_value = null;
var $_children = array();
function Tree ($value) {
$this->_value = $value;
}
function addChild ($value) {
$aux_node = new Tree ($value);
$this->_children [] = $aux_node;
return $aux_node;
}
}
As you can see, in addChild we reference Tree again...
However, you must be careful about references. See the chapter "References explained" for
more details.
Hope this helps.
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Manual Page -- http://www.php.net/manual/en/language.types.object.php
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