一个最轻量级的PHP模板引擎

<?php /* * Created on 2011-10-08 * @author xyl * This is simple template engine for your site */ class XT{ var $folder="template";//模板文件目录 var $t_type=".html";//模板文件类型 var $data=array(); var $subtp=array();//字模板 var $t_cache="./tcache";//模板缓存目录 var $compile=false;//调试 var $content_path=""; function XT(){ if(!file_exists($this->t_cache)){ mkdir($this->t_cache) or die("Failed to create cache directory:".$this->t_cache); } } function setdata($k,$v){ $this->data[$k]=$v; } function subtemplate($filename){ if(is_array($filename)){ foreach($filename as $v){ $this->parse($v); } }else{ $this->parse($filename); } } function __parsedata($content){ //模板包含 $this->subtp=array(); preg_match_all("/<!--\s+include\((.+)\)\s+-->/iu",$content,$rt); if(!empty($rt[1][0])){ foreach($rt[1] as $v){ if(!empty($v)){ $this->subtp[$v]=$v; } } if(!empty($this->subtp)){ $this->subtemplate($this->subtp,true); } } $content = preg_replace("/<!--\s+include\((.+)\)\s+-->/iu", "<?php include('$this->t_cache/\\1.php');?>", $content); //变量 $content = preg_replace("/\{(\\\$[a-z0-9_]+)\}/s", "<?=\\1?>", $content); //逻辑 $content = preg_replace("/<!--\s+if\((.+)\):\s+-->/iu", "<?php if(\\1) { ?>", $content); $content = preg_replace("/<!--\s+endif\s+-->/iu", "<?php } ?>", $content); //循环 $content = preg_replace("/<!--\s+foreach\((.+)\):\s+-->/iu", "<?php foreach(\\1) { ?>", $content); $content = preg_replace("/<!--\s+endforeach\s+-->/iu", "<?php } ?>", $content); return $content; } function parse($filename=null,$sub=false){ $filename=(empty($filename)?basename($_SERVER["PHP_SELF"],".php"):$filename); $content_path=$this->t_cache."/".$filename.".php"; if(!file_exists($content_path)||$this->compile){ $content=implode("",file($this->folder.'/'.$filename.$this->t_type)); $content=$this->__parsedata($content); file_put_contents($content_path,$content); } !$sub?$this->content_path=$content_path:''; } function out(){ extract($this->data); include_once($this->content_path); } } ?>