Шаблонизатор dle (вывод подменю)

class template {
var $dir = '.';
var $template = null;
var $copy_template = null;
var $data = array ();
var $block_data = array ();
var $result = array ('error-top' => '', 'error-bottom' => '', 'menu' => '', 'content' => '' );
var $template_parse_time = 0;

function set($name, $var) {
if( is_array( $var ) && count( $var ) ) {
foreach ( $var as $key => $key_var ) {
$this->set( $key, $key_var );
}
} else
$this->data[$name] = $var;
}

function set_block($name, $var) {
if( is_array( $var ) && count( $var ) ) {
foreach ( $var as $key => $key_var ) {
$this->set_block( $key, $key_var );
}
} else
$this->block_data[$name] = $var;
}

function load_template($tpl_name) {

$time_before = $this->get_real_time();

if( $tpl_name == '' || ! file_exists( $this->dir . DIRECTORY_SEPARATOR . $tpl_name ) ) {
die( "Невозможно загрузить шаблон: " . $this->dir . DIRECTORY_SEPARATOR . $tpl_name );
return false;
}

$this->template = file_get_contents( $this->dir . DIRECTORY_SEPARATOR . $tpl_name );
$this->template = str_replace('{theme}', HOST . '/templates/'. TEMPLATE, $this->template);
$this->copy_template = $this->template;
$this->template_parse_time += $this->get_real_time() - $time_before;
return true;
}

function sub_load_template( $tpl_name ) {

$tpl_name = ( $tpl_name );

if( $tpl_name == '' || ! file_exists( $this->dir . DIRECTORY_SEPARATOR . $tpl_name ) ) {
return "Отсутствует файл шаблона: " . $tpl_name ;
return false;
}
$template .= file_get_contents( $this->dir . DIRECTORY_SEPARATOR . $tpl_name );

return $template;
}

function _clear() {

$this->data = array ();
$this->block_data = array ();
$this->copy_template = $this->template;

}

function clear() {
$this->data = array ();
$this->block_data = array ();
$this->copy_template = null;
$this->template = null;

}

function global_clear() {
$this->data = array ();
$this->block_data = array ();
$this->result = array ();
$this->copy_template = null;
$this->template = null;

}

function compile($tpl) {

$time_before = $this->get_real_time();

if( count( $this->block_data ) ) {
foreach ( $this->block_data as $key_find => $key_replace ) {
$find_preg[] = $key_find;
$replace_preg[] = $key_replace;
}

$this->copy_template = preg_replace( $find_preg, $replace_preg, $this->copy_template );
}

foreach ( $this->data as $key_find => $key_replace ) {
$find[] = $key_find;
$replace[] = $key_replace;
}

$find = isset($find) ? $find : null;
$replace = isset($replace) ? $replace : null;

$this->copy_template = str_replace($find, $replace, $this->copy_template );
$this->copy_template = $this->copy_template;
if( isset( $this->result[$tpl] ) ) $this->result[$tpl] .= $this->copy_template;
else $this->result[$tpl] = $this->copy_template;
$this->_clear();
$this->template_parse_time += $this->get_real_time() - $time_before;
}

function get_real_time() {
list ( $seconds, $microSeconds ) = explode( ' ', microtime() );
return (( float ) $seconds + ( float ) $microSeconds);
}
}