class_simple_template.php

<?php
class simple_template
{

var $pages = array();
var $page = '';
var $path_to_templates = '';
var $last_template_used = '';
var $debug = 0;

function __construct($path_to_templates, $debug=0){
    $this->set_path_to_templates($path_to_templates);
    $this->set_debug($debug);
}


function return_parsed_file($template_file, $tags, $email=false, $path_to_templates='', $inc_avail_tags=false){
    $this->load($template_file, $path_to_templates);
    $this->replace_tags($tags, $template_file);
    return $this->return_output($email, $inc_avail_tags);
}


function echo_parsed_file($template_file, $tags, $path_to_templates=''){
    $this->load($template_file, $path_to_templates);
    $this->replace_tags($tags, $template_file);
    $this->echo_output();
}


function load($template='', $path_to_templates='') {

    $template = $this->determine_template($template);

    if($path_to_templates != ''){
        $this->set_path_to_templates($path_to_templates);
    }

    if(array_key_exists($template, $this->pages)){
        return true;
    }elseif(file_exists($this->path_to_templates.'/'.$template)){
        if($this->pages[$template] = file_get_contents($this->path_to_templates.'/'.$template)){
            return true;
        }else{
            die("Unable to open template file ".$this->path_to_templates."/$template.");
        }
    }else{
        die("Template file ".$this->path_to_templates."/$template not found.");
    }
}

function replace_tags($tags = array(), $template='') {

    $template = $this->determine_template($template);

    if (count($tags) > 0){
        $this->page = $this->pages[$template];
        foreach ($tags as $tag => $data) {
            $data = (file_exists($this->path_to_templates.'/'.$data)) ? $this->parse($data) : $data;
            $this->page = preg_replace('/{'.$tag.'}/', $data, $this->page);
        }
    }else{
        die("No tags designated for replacement.");
    }
}

function echo_output() {
    echo $this->page;
}

function return_output($email=false, $inc_avail_tags=false) {
    if($email){
        $email_data = array();
        if(preg_match('/SUBJECT=\[(.+)\]=SUBJECT.+BODY=\[(.+)\]=BODY/s', $this->page, $m)){
            $email_data['subject'] = $m[1];
            $email_data['body'] = $m[2];
            if($inc_avail_tags){
                if(preg_match('/TOKEN_S=\[(.+)\]=TOKEN_S/s', $this->page, $m)){
                    $email_data['tokens'] = $m[1];
                }else{
                    $email_data['tokens'] = 'FYI: File Contains No "TOKEN_S=[ ... ]=TOKEN_S" Section (This is ok)';
                }
            }
            return $email_data;
        }else{
            die("Invalid Syntax.  Template file syntax: SUBJECT=[Your subject here]=SUBJECT\nBODY=[\nbody of email here\n]=BODY");
        }
    }else{
        $content_data = array();
        if(preg_match('/(.*)TOKEN_S=\[(.+)\]=TOKEN_S(.*)/s', $this->page, $m)){
            $content_data['content'] = $m[1].$m[3];
            $content_data['tokens'] = $m[2];
        }else{
            $content_data['content'] = $this->page;
            $content_data['tokens'] = 'FYI: File Contains No "TOKEN_S=[ ... ]=TOKEN_S" Section (This is ok)';
        }
        if($inc_avail_tags){
            return $content_data;
        }else{
            return $content_data['content'];
        }
    }
}


function set_path_to_templates($path_to_templates){
    // ensure no trailing slash
    $path_to_templates = preg_replace('/\/$/', '', $path_to_templates);
    $path_to_templates = preg_replace('/\\$/', '', $path_to_templates);
    $this->path_to_templates = $path_to_templates;
    return true;
}

function set_debug($debug){
    $this->debug = $debug?$debug:0;
    return true;
}

private function determine_template($template){
    if($template != ''){
        $this->last_template_used = $template;
        return $template;
    }elseif($this->last_template_used != ''){
        return $this->last_template_used;
    }else{
        die("No template file name given!");
    }
}


private function parse($file) {
    if($file==''){
        // why is this here?  because of empty tag values ($data) in the 'replace_tags' method.  Trust me, just leave it be.
        return '';
    }
    ob_start();
    include($this->path_to_templates.'/'.$file);
    $buffer = ob_get_contents();
    ob_end_clean();
    return $buffer;
}


}
?>