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Writing a Template System in PHP

By: bluephoenix	Search For More Articles! Disclaimer Author Terms
Rating: / 69
2004-01-13

Table of Contents:

Writing a Template System in PHP

The Implementation

The Template File

The Class Skeleton

Constructor and Output

Replacing Tags

Including Dynamic Files

The Final Code

Tricks

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Writing a Template System in PHP - The Final Code

(Page 8 of 9 )

Now the templating script is finished. I can store the code in a separate file and reference it when needed.

<?php
class Page
{
  var $page;

  function Page($template = "template.html") {
    if (file_exists($template))
      $this-&gt;page = join("", file($template));
    else
      die("Template file $template not found.");
  }

  function parse($file) {
    ob_start();
    include($file);
    $buffer = ob_get_contents();
    ob_end_clean();
    return $buffer;
  }

  function replace_tags($tags = array()) {
    if (sizeof($tags) &gt; 0)
      foreach ($tags as $tag =&gt; $data) {
        $data = (file_exists($data)) ? $this-&gt;parse($data) : $data;
        $this-&gt;page = eregi_replace("{" . $tag . "}", $data,
                      $this-&gt;page);
        }
    else
      die("No tags designated for replacement.");
  }

  function output() {
    echo $this-&gt;page;
  }
}
?>

After initializing the object with the name of the HTML template file, pass an array of place holders found within the template and the data files or information to the replace_tags method and use the output method to flush the processed page from the class to standard output.

<?php
require_once("lib/template.php");

$page = new Page("template.html");

$page-&gt;replace_tags(array(
  "title" =&gt; "HOME",
  "descript" =&gt; "Welcome to my website!",
  "main" =&gt; "dat/index.dat",
  "menu" =&gt; "dat/menu.dat",
  "left" =&gt; "dat/submenu.dat",
  "right" =&gt; "dat/right.dat",
  "footer" =&gt; "dat/footer.php"
));

$page-&gt;output();
?>

Next: Tricks >>

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