Template class problem

[tsz]

Soo I try to build an simple and basic template engine which displays content from template files.

 

here is the class:

class template {


public $filename;
public $assigned_vars = array();


public function assign($key, $value)
{
$this->assigned_vars[$key] = $value;
}


public function display($filename)
{
if(file_exists($filename))
{
$output = file_get_contents($filename);
foreach($this->assigned_vars as $key => $value)
{
$output = preg_replace('/{'.$key.'}/', $value, $output);
}
return $output;
}
else{
return "Missing template error";
}
}


    
}

yet when I tries to execute the class its doesn't return anything.

i execute it like this:

$tp->display(ROOT_PATH.'home.php');

consider that I have defined ROOT_PATH already and $tp as new template class.

 

what have i done wrong?

help plz

Edited April 24, 2015 by tsz

[cyberRobot]

It's probably not this simple, but have you tried displaying the returned result?

print $tp->display(ROOT_PATH.'home.php');

Edited April 24, 2015 by cyberRobot

[tsz]

I have tried but it doesn't work either.

[cyberRobot]

Are all PHP errors and warnings enabled? Are they being shown? Note that you can add the following to the top of your script during the debugging process:

error_reporting(E_ALL);
ini_set('display_errors', 1);

Also, have you tried adding some debugging statements to your class to know if things are even being called? For example, you could try something like this:

<?php
public function display($filename) {
 
     print '<div>In display() method</div>';
 
 
     if(file_exists($filename)) {
?>

[tsz]

 

Are all PHP errors and warnings enabled? Are they being shown? Note that you can add the following to the top of your script during the debugging process:

error_reporting(E_ALL);
ini_set('display_errors', 1);

Also, have you tried adding some debugging statements to your class to know if things are even being called? For example, you could try something like this:

<?php
public function display($filename) {
 
     print '<div>In display() method</div>';
 
 
     if(file_exists($filename)) {
?>

 

I have tried too add the error reporting script. no related warnings to the class(only to another, unrelevent class).

your second suggestion doesn't output anything either.

[cyberRobot]

You could try adding the following debugging statement to your code right before you attempt to call the display() method:

print '<pre>' . print_r($tp, true) . '</pre>';

Does it say that $tp is a "template Object"?