[RESOLVED] BTW of $this and object instance.

[whisher06]

Hi anyOne.
I studied in the php manual that
$this is available when a method is called from
within an object context (his class).
Well I found this simple class on phpclasses
the class:

<?php
/**
 * 
 * Patrick J. Mizer
 * <[e-mail]>
 * 
 * May 28, 2006
 * 
 * Very lightweight *but functional* template system.
 * 
 */
class SimpleTPL {

function SimpleTPL() {

}

function assignValue($name, $value)
{
	$this->$name = $value;
}

function renderTemplate($templatePath)
{
	if(file_exists($templatePath)){
		require($templatePath);
	}else {
		$this->_handleError('Could not locate template: <b>' . $templatePath . '</b>');
	}
}

function cleanUp() 
{
	@settype(&$this, 'null');
}

function _handleError($msg)
{
	echo $msg;
}
}
?>

I tried this simple example:

//index.php
<?php
error_reporting(E_ALL);
require_once('SimpleTPL.class.php');
$tpl =& new SimpleTPL();
$name = 'Patrick J. Mizer';
$tpl->assignValue('name', $name);
$tpl->renderTemplate('header.tpl.php');
$tpl->cleanUp();
/* It works */
var_dump($tpl->name);
/* It doen't work */
var_dump($this->name);
?>
//header.tpl.php
<h1 id="">This is the Header</h1>
/* It doen't work */
<?php echo $tpl->name; ?>
/* It works */
<?php echo $this->name; ?>

In a nutshell I thought that the right
way to refer to the objects in the header.tpl.php
was $tpl->name but instead it works upside down
(in my opinion)
I don't understand this odd way to refer to
an object.
Could you explain me, please ? 🙂
Bye.

[halojoy]

//header.tpl.php is used from within a class function
so has to use variable $this->name
The template can be seen as a part of Class

will be called by your application script THROUGH The Class

Say you create a new object, with another name:

require_once('SimpleTPL.class.php');
$my_template =& new SimpleTPL();

how can you use header.tpl.php ??
when it has got variable <?php echo $tpl->name; ?>

$this is a neutral object, that represent ANY object created with
$object_name = new SimpleTPL();

[whisher06]

Tks a lot buddy.
Now I can see it 😉
Bye.