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Old 02-05-2006, 11:20 AM   #1

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PHP Template Engine Help
Hi,

I am coding my new site and I need to create a template engine because my coding gets really inefficient and looks real messy.

Anyway, my problem is that when I enter a variable to be substituted in the template, such as {TITLE} for Moozica, it will only do one. I can put in 50 variables with 50 data bits assigned to them and only the last one will get substituted.

I am trying to use OOP here as I think it is efficient, so don't comment on that. Just the code, which I have included below.

template.php

PHP Code:
<?php

class template
{

    var $ouput;    
    
    function parseFile( $file )
    {
    
        if (file_exists($file))
        {
        
            $file = $file;
        
        }
        else
        {
        
            $file = "error.tpl";
        
        }
    
        return file_get_contents($file);
    
    }
    
    function parseTemplate( $templ, $vars )
    {
    
        $file = $this->parseFile($templ);
        
        foreach ($vars as $variable => $data)
        {
        
            $variable = '{' . $variable . '}';
            $this->output = str_replace($variable, $data, $file);
            print $this->output;
        
        }
        
    }
    
    function display()
    {
    
        // return $this->output;
    
    }
    
}

?>
index.php

PHP Code:
<?php

include ("includes/template.php");

include ("includes/func.php");

$template = new template;

$vars = array('CONTENT' => 'Testing',
'TITLE' => 'Woot');

$file = $template->parseTemplate('templates/index.tpl', $vars);

print $template->display();

?>
Now the files func.php only has a mysql_connect function in it. And index.tpl just has the html for a normal page with CONTENT and TITLE.

Can somebody help me?
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Old 02-05-2006, 04:45 PM   #2

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I'm sorry if this isn't constructive as to helping you write your own engine, but I have always been a fan of not re-inventing the wheel. There are several really good opensource engines out, some are bulky and complicated others are simpler. Below is a link to my personal favorite.

http://templatepower.codocad.com/
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Old 02-05-2006, 04:51 PM   #3

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As for your actual problem. It is happening because the input variable $file is never being updated. So it is grabbing a fresh copy of the $file data every time, thus removing ur changes. Below is a copy with changes I would make to fix it.

PHP Code:
<?php 
 
class template 
{ 
 
var $ouput; 
 
function parseFile( $file ) 
{ 
 
if (file_exists($file)) 
{ 
 
$file = $file; 
 
} 
else 
{ 
 
$file = "error.tpl"; 
 
} 
 
return file_get_contents($file); 
 
} 
 
function parseTemplate( $templ, $vars ) 
{ 
 
$file = $this->parseFile($templ); 
 
foreach ($vars as $variable => $data) 
{ 
 
$variable = '{' . $variable . '}'; 
$file = str_replace($variable, $data, $file); 
 
} 
 
$this->output = $file;
print $this->output; 
} 
 
function display() 
{ 
 
// return $this->output; 
 
} 
 
} 
 
?>
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Old 02-06-2006, 06:50 AM   #4

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Thanks LarryB. I shall test it out tonight if I can
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Old 02-06-2006, 07:46 AM   #5

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Just realized I made a small mistake and have updated the file again.
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Old 02-06-2006, 07:50 AM   #6

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but I could just use display couldn't I? I could just use

PHP Code:
<?php 
 
class template 
{ 
 
var $ouput; 
 
function parseFile( $file ) 
{ 
 
if (file_exists($file)) 
{ 
 
$file = $file; 
 
} 
else 
{ 
 
$file = "error.tpl"; 
 
} 
 
return file_get_contents($file); 
 
} 
 
function parseTemplate( $templ, $vars ) 
{ 
 
$file = $this->parseFile($templ); 
 
foreach ($vars as $variable => $data) 
{ 
 
$variable = '{' . $variable . '}'; 
$file = str_replace($variable, $data, $file); 
 
} 
 
$this->output = $file;
 
} 
 
function display() 
{ 
 
print $this->output; 
 
} 
 
} 
 
?>
Just use the display function?
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Old 02-06-2006, 03:45 PM   #7

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yes. I was just using the code that you had in the original file. Wasn't looking further than that.
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