PHP Classes

Template parser: Template engine with tags defined by another class

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Version License PHP version Categories
template-parser 1.2GNU Lesser Genera...4.0Templates
Description 

Author

This class implements a template engine with tags defined by another class.

It can parse a template and extract the names of tag functions defined within tags delimiter characters.

The parser class calls a separate handler class with functions with the same of of the template tags to return the processed tag output.

The template parser class returns the processed template as a string.

The tag delimiter characters can be customized.

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Example

<?php
error_reporting
(E_ALL);
ini_set('display_errors',1);

include(
'template_parser.class.php');

class
MyResolver { # simple demo resolver
 
function __construct() {
   
$this->date_format = 'Y-m-d';
  }
  function
this($data) {
    return
$this->$data;
  }
  function
php($data) {
   
ob_start();
    eval(
$data);
   
$out = ob_get_contents();
   
ob_end_clean();
    return
$out;
  }
  function
upper($data) {
    return
strtoupper($data);
  }
  function
date_format($data) {
   
$this->date_format = $data;
  }
  function
date($data) {
    if(!
$data) $data = 'now';
    return
date($this->date_format,strtotime($data));
  }
}

$s = <<<'EOD'
<div><?date_format d/m-Y?>
<p>Hello <?php $a = "world"; echo $a; ?>, today is <?date?>, yesterday was <?date yesterday?></p>
<p><?upper How do you do??></p>
<p>You can <?upper nest <?php echo 'tags';?> within ?>other tags,
   even within <?php echo '<?upper php?> strings!';?></p>
<p>Because all the resolvers are within the same class,
   they can <?php echo $this->upper('access eachother');?>.</p>
<p>The current date format is '<?this date_format?>'</p>
</div>
EOD;

echo
'<pre>'.htmlspecialchars($s)."\n\n -----> \n\n";
$tp = new template_parser(new MyResolver(),'<?','?>',' ');
echo
htmlspecialchars($tp->parse($s));
echo
'</pre>';
?>


  Files folder image Files  
File Role Description
Plain text file template_parser.class.php Class The main class
Plain text file test_template_parser.php Example Test/demo for template parser

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