API15:JObservable/attach

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Description

Attach an observer object

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Syntax

attach(&$observer)

Parameter Name	Default Value	Description
&$observer		$observer An observer object to attach

Returns

void

Defined in

libraries/joomla/base/observable.php

Importing

jimport( 'joomla.base.observable' );

Source Body

function attach( &$observer)
{
        // Make sure we haven't already attached this object as an observer
        if (is_object($observer))
        {
                $class = get_class($observer);
                foreach ($this->_observers as $check) {
                        if (is_a($check, $class)) {
                                return;
                        }
                }
                $this->_observers[] =& $observer;
        } else {
                $this->_observers[] =& $observer;
        }
}

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Examples

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