Nije template jezik već jednostavna klasa koja izoluje template od ostatka aplikacije i omogućava lako baratanje sa njima. Daklen:
PHP kôd:
<?php
include 'Template.class.php';
tpl_assign('firstname', 'Ilija');
tpl_assign('lastname', 'Studen');
tpl_display('templates/something.php');
?>
A something.php izgleda:
PHP kôd:
<?php if($firstname && $lastname) { ?>
<p>Dobrodosao <?= $firstname ?> <?= $lastname ?></p>
<?php } else { ?>
<p>Ne znam tvoje ime i prezime :(</p>
<?php } ?>
Pored display() koji printuje kod ima i fetch() metod koji otvara output buffer, poziva display i vraća sadržaj output buffera nakon što je template pozvan (tj. vraća šta god je template printao kao string). Tu je i assign_by_ref funkcija.
I... to je to
Skoro godinu dana radim sa ovom klasom i nije mi se ukazala potreba za bilo čim složenijim. Maleno, jednostavno, radi posao i ne smeta.
PHP kôd:
<?php
/**
* Template class
*
* This class is template wrapper, responsible for forwarding variables to the
* templates and including them.
*
* @version 1.0
* @author Ilija Studen <ilija.studen@gmail.com>
*/
class Template {
/**
* Array of template variables
*
* @var array
*/
var $vars = array();
/**
* Assign variable value to the template
*
* @access public
* @param string $name Variable name
* @param mixed $value Variable value
* @return boolean
*/
function assign($name, $value) {
if(trim($name) == '') return false;
$this->vars[trim($name)] = $value;
return true;
} // assign
/**
* Assign value by reference
*
* @access public
* @param string $name
* @param mixed $value
* @return boolean
*/
function assignByRef($name, &$value) {
if(trim($name) == '') return false;
$this->vars[trim($name)] = $value;
return true;
} // assignByRef
/**
* Display template and retur output as string
*
* @access public
* @param string $template Absolute path template path
* @return string
*/
function fetch($template) {
ob_start();
$display = $this->display($template);
if($display === false) {
ob_end_clean();
return false;
} // if
return ob_get_clean();
} // fetch
/**
* Display template
*
* @access public
* @param string $template Template path or path relative to templates dir
* @return boolean
*/
function display($template) {
return $this->includeTemplate($template);
} // display
/**
* Include specific template
*
* @access public
* @param string $template Absolute template path
* @return null
*/
function includeTemplate($template) {
if(file_exists($template)) {
foreach($this->vars as $k => $v) {
if(!isset($$k)) $$k = $v;
} // foreach
include $template;
return true;
} else {
return false;
} // if
} // includeTemplate
/**
* Return template service instance
*
* @access public
* @param void
* @return Template
*/
function &instance() {
static $instance;
if(!is_object($instance) || !is_a($instance, 'Template')) {
$instance = new Template();
} // if
return $instance;
} // instance
} // Template
// ==============================================================
// Shortcut methods
// ==============================================================
/**
* Assign template variable
*
* @access public
* @param string $varname Variable name
* @return boolean
*/
function tpl_assign($varname, $varvalue) {
$template_engine =& Template::instance();
return $template_engine->assign($varname, $varvalue);
} // tpl_assign
/**
* Assign variable by reference
*
* @access public
* @param string $varname
* @param mixed $varvalue
* @return boolean
*/
function tpl_assign_by_ref($varname, &$varvalue) {
$template_engine =& Template::instance();
return $template_engine->assignByRef($varname, $varvalue);
} // tpl_assign_by_ref
/**
* Render template and return it as string
*
* @access public
* @param string $template Template that need to be rendered
* @return string
*/
function tpl_fetch($template) {
$template_engine =& Template::instance();
return $template_engine->fetch($template);
} // tpl_fetch
/**
* Render specific template
*
* @access public
* @param string $template Template that need to be rendered
* @return boolean
*/
function tpl_display($template) {
$template_engine =& Template::instance();
return $template_engine->display($template);
} // tpl_display
?>