项目目录：
Smarty.class.php代码：
1 <?php 2 class Smarty{ 3 private $template_dir = "./templates"; 4 private $compile_dir = "./templates_c"; 5 private $cache_dir = "./cache"; 6 7 public $tpl_var = array(); 8 public $caching = false; 9 10 public function __construct(){ 11 $this->checkDir(); 12 } 13 14 private function checkDir(){ 15 if(!is_dir($this->template_dir)){ 16 exit("模板文件目录templates不存在！请手动创建"); 17 } 18 if(!is_dir($this->compile_dir)){ 19 exit("编译文件目录templates_c不存在！请手动创建"); 20 } 21 if(!is_dir($this->cache_dir)){ 22 exit("缓存文件目录cache不存在！请手动创建"); 23 } 24 } 25 26 public function assign($tpl_var, $var=null){ 27 if(isset($tpl_var) && !empty($tpl_var)){ 28 $this->tpl_var[$tpl_var] = $var; 29 }else{ 30 exit("模板变量名没有设置好"); 31 } 32 } 33 34 public function display($file){ 35 $tpl_file = $this->template_dir.'/'.$file; 36 if(!file_exists($tpl_file)){ 37 exit('Error:模板文件不存在！'); 38 } 39 $parse_file = $this->compile_dir.'/'.md5($file).'.php'; 40 41 if(!file_exists($parse_file) || filemtime($tpl_file)){ 42 include "SmartyCompile.class.php"; 43 $compile = new SmartyCompile($tpl_file); 44 $compile->parse($parse_file); 45 } 46 47 if($this->caching){ 48 $cache_file = $this->cache_dir.'/'.md5($file).'.html'; 49 50 if(!file_exists($cache_file) || filemtime($cache_file) < filemtime($parse_file)){ 51 include $parse_file; 52 $content = ob_get_clean(); 53 if(!file_put_contents($cache_file, $content)){ 54 exit('缓存文件生成出错'); 55 } 56 } 57 include $cache_file; 58 }else{ 59 include $parse_file; 60 } 61 } 62 } 63 ?>
SmartyCompile.class.php代码：
1 <?php 2 class SmartyCompile{ 3 private $content = ''; 4 5 public function __construct($tpl_file){ 6 $this->content = file_get_contents($tpl_file); 7 } 8 9 public function parseVar(){ 10 $pattern = '/{$([w]+)}/'; 11 if(preg_match($pattern, $this->content)){ 12 $this->content = preg_replace($pattern, '<?php echo $this->tpl_var["$1"]?>', $this->content); 13 } 14 } 15 16 public function parse($parse_file){ 17 $this->parseVar(); 18 if(!file_put_contents($parse_file, $this->content)){ 19 exit('编译文件生成出错! '); 20 } 21 } 22 } 23 ?>
index.php代码：
1 <?php 2 require "Smarty.class.php"; 3 4 $smarty = new Smarty(); 5 6 $smarty->caching = true; 7 8 $webname = "Smarty测试"; 9 $author = "weixing"; 10 $title = "这是一个测试标题"; 11 $content = "这是一段测试内容"; 12 13 $smarty->assign('webname', $webname); 14 $smarty->assign('author', $author); 15 $smarty->assign('title', $title); 16 $smarty->assign('content', $content); 17 18 $smarty->display('index.tpl'); 19 ?>
index.tpl代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>{$webname}</title> </head> <body> <div> <h3>{$title} </h3> <span>作者：{$author}</span> <p>内容：{$content}</p> </div> </body> </html>