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php Smarty模板引擎 foreach循环

mg电子:”他说。

时间:2014-01-08 00:00:00 编辑:简简单单 来源:转载

模板文件:

 代码如下

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.bjxdzj.com/mgdz/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>{$web_tile}</title>
</head>
<body>
{$article_title}
<br/>
  -- by {$author}
<hr/>
<br/>
{$content}
<br/>
-- publish @ {$time}

<br/>
<br/>
foreach test:

{foreach ( from=url key=b item=c )}
 <a href="index.php?artcle_id={==b}">{==c}</a>
{/foreach}

<br/>

</body>
</html>

解析引擎:

 代码如下
// var
  $pattern_var = "/{$left_tag}\$([wd]+){$right_tag}/";
  $replace_var = '<?php echo $this->var_tpl_arr["$1"];?>';
  
  if (preg_match($pattern_var, $content)) {
   $content = preg_replace($pattern_var, $replace_var, $content);
  }
  
  // foreach
  preg_match_all("/{$left_tag}foreachs+([^{]+?){$right_tag}/is", $content, $match_foreach);
  if (isset($match_foreach[1]) && is_array($match_foreach)) {
   foreach($match_foreach[1] as $match_key => $match_value) {
    $split_foreachs = array_filter(preg_split('/s+/is', $match_value));
    $new_foreach_tag = array();
    foreach($split_foreachs as $split_foreach) {
     $split = explode("=", $split_foreach);
     if (count($split == 2)) {
      if(in_array($split[0], array("from","item","key"))) {
//过滤标签 不存在过滤
       $new_foreach_tag[$split[0]] = $split[1];
      }
     }
    }
    
    $from = $key = $item = '';
    extract($new_foreach_tag);
    $key = ($key) ? '$'.$key.' =>' : '' ;
    $replace_foreach = '<?php foreach($this->var_tpl_arr["'.$from.'"] as '.$key.' $'.$item.') { ?>';
    $content = str_replace($match_foreach[0][$match_key], $replace_foreach, $content);
    
   }
  }
  
  $pattern_foreach = "/{$left_tag}/foreach{$right_tag}/";
  $replace_foreach = "<?php } ?>";
  if (preg_match($pattern_foreach, $content)) {
   $content = preg_replace($pattern_foreach, $replace_foreach, $content);
  }
  
  // var in statement
  $pattern_var = "/{$left_tag}==([wd]+){$right_tag}/";
  $replace_var = '<?php echo $$1;?>';
  
  if (preg_match($pattern_var, $content)) {
   $content = preg_replace($pattern_var, $replace_var, $content);
  }

解析后:

 代码如下

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.bjxdzj.com/mgdz/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title><?php echo $this->var_tpl_arr["web_tile"];?></title>
</head>
<body>
<?php echo $this->var_tpl_arr["article_title"];?>
<br/>
  -- by <?php echo $this->var_tpl_arr["author"];?>
<hr/>
<br/>
<?php echo $this->var_tpl_arr["content"];?>
<br/>
-- publish @ <?php echo $this->var_tpl_arr["time"];?>

<br/>
<br/>
foreach test:

<?php foreach($this->var_tpl_arr["url"] as $b => $c) { ?>
 <a href="index.php?artcle_id=<?php echo $b;?>"><?php echo $c;?></a>
<?php } ?>

<br/>

</body>
</html>

使用:

 代码如下

<?php

require_once 'core/YATP.class.php';

$app = new YATP();
date_default_timezone_set("Asia/Shanghai");
$app->is_cache = false;

$article_title = "yet,it is a simple template engine";
$author = "sanwhiteyu@tencent.com";
$web_tile = "just test ";
$content = "It is easy to write a simple template engine for yourself,what u can do is try to do it!";
$time = date("Y-m-d H:i:s",time());

$url = array(
  "url1"=>mg电子,
  "url2"=>"http://www.bjxdzj.com/mgdz",
);

$app->assign("article_title",$article_title);
$app->assign("author",$author);
$app->assign("web_tile",$web_tile);
$app->assign("content",$content);
$app->assign("time",$time);
$app->assign("url",$url);
$app->display("index.html");


// end of script效果:

php Smarty模板引擎 foreach循环

 

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