模板引擎作为视图层和模型曾分离的一种解决方案。

首先我们新建一个Template.class.php 的文件 '.m', //设置模板文件'templateDir' => 'template/', //设置模板所在的文件夹'compileDir' => 'cache','debug' => false,//设置编译后存放的目录'cache_htm' => true,//是否需要编译成静态的html文件'suffix_cache'=> '.htm',//编译后的文件后缀'cache_time' =>2000,// 多长时间自动更新'php_turn' =>false,//是否支持原生的php代码'cache_control' => 'control.dat',);private $compileTool;//编译器public $filename;//模板文件名称private $value =array();//值栈static private $instance = null;public $debug = array();//调试信息public function __construct($arrayConfig =array()){ //返回当前UNIX时间戳和微妙数$this->debug['begin'] = microtime(true);$this->arrayConfig =$arrayConfig+$this->arrayConfig;$this->getPath();if(!is_dir($this->arrayConfig['templateDir'])){exit("template isnt not found");}if(!is_dir($this->arrayConfig['compileDir'])){mkdir($this->arrayConfig['compileDir'],0770,true);}include("Compile.class.php");//$this->compileTool = new Compile;}/**路径处理为绝对路径*/public function getPath(){$this->arrayConfig['templateDir'] = strtr(realpath($this->arrayConfig['templateDir']),'\\','/').'/';$this->arrayConfig['compileDir'] = strtr(realpath($this->arrayConfig['compileDir']),'\\','/').'/';}/***单例模式获取模板的实例**/public static function getInstance(){if(is_null(self::$instance)){self::$instance = new Template();}return self::$instance;}public function setConfig($key,$value = null){if(is_array($key)){$this->arrayConfig = $key+$this->arrayConfig;}else{$this->arrayConfig[$key] = $value;}}public function getConfig($key = null){if($key){return $this->arrayConfig[$key];}else{return $this->arrayConfig;}}/** 注入单个变量**/public function assign($key,$value){$this->value[$key] = $value;}/** 注入多个变量**/public function assignArray($array){if(is_array($array)){foreach($array as $k => $v){$this->value[$k] = $v;}}}/*** 获取模板文件的路径**/public function path(){return $this->arrayConfig['templateDir'].$this->filename.$this->arrayConfig['suffix'];}/***是否需要缓存**/public function needCache(){return $this->arrayConfig['cache_htm'];}/***是否需要重新生成缓存文件**/public function reCache($file){$flag = false;//生成缓存文件$cacheFile = $this->arrayConfig['compileDir'].md5(@$filename).'.'.'php';//var_dump($cacheFile);if($this->arrayConfig['cache_htm']===true){//设置timeflag (判断当前时间-模板文件上次修改的时间)是否小于设置的缓存时间//如果小于则返回TRUE$timeFlag = (time()-@filemtime($cacheFile))arrayConfig['cache_time']?true:false;//1，判断缓存文件是否存在，//2，缓存文件是否有内容//3，时间是否在设置的缓存时间之内if(!is_file($cacheFile)&&filesize($cacheFile)>1&&$timeFlag){$flag = true;}else{$flag = false;}}return $flag;}/***显示模板**/public function show($file){$this->filename =$file;if(!is_file($this->path())){exit('找不到相对应的模板');}$compileFile = $this->arrayConfig['compileDir'].'/'.md5(@$filename).'.php';$cacheFile = $this->arrayConfig['compileDir'].md5(@$filename).'.htm';//echo $compileFile;//echo $cacheFile;if($this->reCache($file)===false){$this->debug['cached'] = 'false';//var_dump($compileFile);$this->compileTool = new Compile($this->path(),$compileFile,$this->arrayConfig);if($this->needCache()){//是否需要缓存ob_start();}//函数从数组中把变量导入到当前的符号表中extract($this->value,EXTR_OVERWRITE);//判断 文件是否存在，生成文件的修改时间是否小于模板文件修改时间if(@is_file($compileFile)||filemtime($compileFile)path())){$this->compileTool->vars = $this->value;$this->compileTool->compile();//引入文件include $compileFile;}else{include $compileFile;}if($this->needCache()){//如果需要缓存的话$message = ob_get_contents();//则生成缓存文件file_put_contents($cacheFile,$message);}}else{//如果缓存文件时间小于设定的时间//直接读取缓存文件readfile($cacheFile);//$this->debug['cached'] = true;}$this->debug['spend'] = microtime(true) - $this->debug['begin'];$this->debug['count'] = count($this->value);$this->debug_info();/*var_dump($compileFile);thisvar_dump($this->path());if(!is_file($compileFile)){mkdir($this->arrayConfig['compileDir']); //此处若存在需要判断$this->compileTool->compile($this->path(),$compileFile);readfile($compileFile);}else{readfile($compileFile);}*/}/***debug 调试函数**/public function debug_info(){//$this->arrayConfig['debug']=false;if($this->arrayConfig['debug']===true){var_dump($this);echo "程序运行日期",date("Y-m-d h:i:s")."";echo "模板解析耗时",$this->debug['spend'],'秒'."";echo "模板包含标签数目",$this->debug['count']."";echo "是否使用静态缓存",$this->debug['cached']."";//echo "模板引擎实例参数",var_dump($this->getConfig());}}/******清楚缓存的文件*****/public function clean($path = null){if($path = null){$path = $this->arrayConfig['CompileDir'];$path = glob($path.'*'.$this->arrayConfig['suffix_cache']);//glob 函数返回匹配指定的文件夹目录}else{$path = $this->arrayConfig['compileDir'].md5($path).'.htm';foreach((array)$path as $v){//删除unlink($v);}}}}

新建一个 Compile.class.php 翻译模板文件 template = $template;$this->comfile = $compileFile;$this->content = file_get_contents($template);if($config['php_turn']===false){//echo "123";//$this->T_R[]="";}//echo "123";//正则匹配 {$xxx} 格式$this->T_P[]="#\{\\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}#";$this->T_R[]="value['\\1'];?>";}public function compile(){$this->c_var2();//$this->c_staticFile();//var_dump($this);file_put_contents($this->comfile,$this->content);}public function c_var2(){// 将{$xxx} 替换为$this->content = preg_replace($this->T_P,$this->T_R,$this->content);}public function c_staticFile(){$this->content =preg_replace('#\{\!(.*?)\!\}#','',$this->content);}public function __set($name,$value){$this->$name = $value;}public function __get($name){return $this->$name;}}

新建一个测试文件 test.php false,'debug'=>false));$tpl->assign('data','hello world');$tpl->show('member');//var_dump($tpl->getConfig());

模板文件member.m welcome{$data}

显示截图

借鉴 php核心技术与最佳实践

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