OOP question

rpratt

Been playing with a class (see below)that I found in a PHP book. It's working great...substitutes variables {varName} that I have in my template.inc file with the right content.

The question I have is about swapping out a graphic based on the page the user is on. I have several nav buttons that are part of my template.inc file. They have rollovers on them that swap out the graphics, which is no problem as I just included that in the template, but I'd like to display the over state if the user is on the same page as the nav button. So if they are on the about us page the about us button is highlighted.

How do go about making this happen in my class without having to put PHP code in the template.inc file?

I assume you would replace the img src in the template file with a variable for each of the buttons, have the class do some type of check to see what page is being called up and input the right value?

Any ideas.

Thanks for your help.

Ryan

Here is the class I'm using:

 <?php # HtmlTemplate.class
// This class reads in a template, sets the different values, and sends it to the browser.

class HtmlTemplate {
 // Set the attributes.
 var $template;
 var $html;
 var $parameters = array();

 function HtmlTemplate ($template) { // This function sets which template will be used.
  $this->template = $template;
  $this->html = implode ("", (file($this->template))); // Read the template into an array, then create a string.
 }

function SetParameter ($variable, $value) { // This function sets the particular values.
  $this->parameters[$variable] = $value;
 }

 function CreatePage () { // This function does the bulk of the work.
  foreach ($this->parameters as $key => $value) { // Loop through all the parameters and set the variables to values.
   $template_name = '<!--{' . $key . '}-->';
   $this->html = str_replace ($template_name, $value, $this->html);
  }    

  echo $this->html;
 }
}
?>

rpratt

here is source code for one of the buttons in the template(there are three buttons):

<a href="portfolio_html/multimedia.php" 
onMouseOut="MM_swapImgRestore()" 
onMouseOver="MM_swapImage('multimedia','','images/multimedia-over.gif',1)">
<img src="images/multimedia.gif" alt="Multimedia" name="multimedia" width="81" height="41" border="0"></a>

Ryan

barand

I'm not an expert in javascript but maybe this could be done in an 'onLoad' event for the page.

stolzyboy

yep, onload, set imagename.src="rolledoverimage"

rpratt

Not sure I understand what your saying here.

My template file does have a onload event but it's loading the rollover images not the up state. Am I not understanding what your saying?

Since I can't put PHP code in my template file I think whats needed is to somehow execute the php within the instance then pass along the result to the HTML using:

$page->SetParameter("mutimedia",$multimedia);

But I don't know how to do that or code the coditional for the other three buttons.

Any ideas?

Ryan

imnu

I am trying the same code and have a similar situation. I put some php codes in the html template (though I use php extension for the file), but it just didn't work. I got a solution to this problem from another forum, which works to some extent. That is the reason I posted this message to seek furhter help.

What you could do is to write additional functions in your class file, and use those functions to set the variable values. For example, if you need to include a menu bar, you may write in the class:

	function menu (){
	include 'menu.php';//You may just write the code for the menu here. menu.php can contain php codes.
	}

Assuming you have a variable in the template called {MENU}, in the file for displaying the page using the template, you write something like this:

$page = new HtmlTemplate2 ("template.php");
          Set $page->SetParameter ("MENU", $page->menu());

My problem is that the menu appears in a wrong place. Say I place {MENU} below an image banner, but it appears above the menu. This happens to all those variables I use functions to set. Some functions do not work at all this way. For example, following function displays nothing for some reasons using the method I just described.

function ads1(){
if (@include(getenv('DOCUMENT_ROOT').'ads.php')) {
if (!isset($phpAds_context)) $phpAds_context = array();
$phpAds_raw = view_raw ('', 2, '', '', '0', $phpAds_context);
echo $phpAds_raw['html'];
}
}

Please help me out here.