Monday 07 July 2008 9:25:28 pm

ArrayAccess is an interface for php classes. It is quite handy. I am sending you a demo.

class Demo implements ArrayAccess, Iterator 
{
	 private $demo = 'default';
	 private $test = 'default';
	 private $_offsets = array('Demo', 'Test');       
	 
	 public function setDemo($value)
	 {
	 	 $this->demo = $value;	 	 
	 }
	 
	 public function getDemo()
	 {
	 	 return $this->demo;
	 }
	 
	 public function setTest($value)
	 {
	 	 $this->test = $value;
	 }
	 
	 public function getTest()
	 {
	 	 return $this->test;
	 }
	 
	//Foreach Access
    public function rewind()
    {
        $this->cur = 0;
    }
    
    public function key()
    {
        return $this->_offsets[$this->cur];
    }
    
    public function current()
    {   
        $function = 'get' . $this->_offsets[$this->cur];
        return $this->$function();   
    }
    
    public function next()
    {
        ++$this->cur;
    }
    
    public function valid()
    {
        return $this->cur < count($this->_offsets);
    }
    
    //Array Accessor
    function offsetExists($name) 
    {
        return (in_array($name, $this->_offsets));
    }
    
    function offsetGet($name) 
    {
        if(in_array($name, $this->_offsets))
        {
            $function = 'get' . $name;  
            return $this->$function();
        }
        return null;                         
    }
    
    function offsetSet($name, $id) 
    {
        if(in_array($name, $this->_offsets))
        {
            $function = 'set' . $name;
            return $this->$function($id);
        }                                     
    }
    
    function offsetUnset($name) 
    {
        if(in_array($name, $this->_offsets))
        {
            $function = 'set' . $name;
            return $this->$function(null);
        }
    }
}     

$example = new Demo();
echo '<h4>Before Set</h4>';
echo 'demo = ' . $example['Demo'] . '<br>';
echo 'test = ' . $example['Test'] . '<br>';   


$example['Demo'] = 'Demo';
$example['Test'] = 'Test';
echo '<h4>After Set</h4>';
echo 'demo = ' . $example['Demo'] . '<br>';
echo 'test = ' . $example['Test'] . '<br>';   

echo '<h4>Foreach</h4>';
foreach($example as $key => $value)
{
	echo "$key = $value <br>";
}

echo '<h4>Work Around</h4>';
foreach($example as $key => $value)
{
	$$key = $value;
	//Set to template variable
}
echo  'demo = ' . $Demo . '<br>';
echo 'test = ' . $Test . '<br>';