一个PHP模板,主要想体现一下思路

思路:
欲在速度和易用(主要指的是美工设计的方便性)之间取得一个平衡点.于是采用了由html文件生成php文件的办法(编译?)
也想在分离显示逻辑和分离html代码之间平衡一下

例如一个论坛首页(index.php):

代码:

require('./template.php');
//由html生成的php文件的前缀,区别使用多种风格.
$tpl_prefix = 'default';
//模板文件名
$tpl_index = 'index';

$tpl = new Template($tpl_prefix);

$cats = array(
array('forum_id'=>'1','forum_cat_id'=>'0','forum_name'=>'PHP学习'),
array('forum_id'=>'2','forum_cat_id'=>'0','forum_name'=>'MYSQL学习')
);
$forums = array(
array('forum_id'=>'3','forum_cat_id'=>'1','forum_name'=>'PHP高级教程'),
array('forum_id'=>'4','forum_cat_id'=>'1','forum_name'=>'PHP初级教程'),
array('forum_id'=>'5','forum_cat_id'=>'2','forum_name'=>'MYSQL相关资料')
);

if ($cats)
{
if ($tpl->chk_cache($tpl_index))//检查判断是否需要重新生产PHP模板文件.
{
   $tpl->load_tpl($tpl_index);//加载html模板文件.
   //替换PHP语句
   $tpl->assign_block("{block_cat}","");
   $tpl->assign_block("{/block_cat}","");
$tpl->assign_block("{block_forum}","
nif($forum['forum_cat_id'] == $cat['forum_id']) {?>");
   $tpl->assign_block("{/block_forum}","");
   //生产PHP模板文件.
   $tpl->write_cache($tpl_index);
}
}
//包含PHP模板文件.
include($tpl->parse_tpl($tpl_index));
?>

对应的html模板文件(index.html):

代码:

{block_cat}

{=$cat['forum_name']}

{block_forum}

{/block_forum}

{=$forum['forum_name']}

{/block_cat}

经过处理,里面的{block_forum}{block_cat}标签被替换成PHP循环语句,用于显示数组种所有元素.

生成的PHP模板文件(default_index.php):

代码:

if($forum['forum_cat_id'] == $cat['forum_id']) {?>

}?>

default_index.php被包含在index.php,这样就可以正常显示了.

这样,HTML模板文件可以用dw来进行修改美化,美工人员应该会方便一些.

template.php

代码:

class Template {

//$this->$template,储存模板数据.
var $template = '';

//模板路径.
var $tpl_path = '';

//模板前缀(风格名称).
var $tpl_prefix = '';

//cache路径(编译后的路径).
var $cache_path = '';

//css文件路径.
var $css_path = '';

//header文件路径.
var $header_path = '';

//footer文件路径
var $footer_path = '';

function Template($root = 'default')
{
   //模板前缀(风格名称).
   $this->tpl_prefix = $root;
   //模板文件路径.
   $this->tpl_path = './templates/' . $root . '/';
   //生成的PHP文件存放路径.
   $this->cache_path = './template_data/' .$this->tpl_prefix . '_';
   return true;
}

function chk_cache($tpl_index)
{
   $tpl_file = $this->tpl_path . $tpl_index . '.html';
   $cache_file = $this->cache_path . $tpl_index . '.php';
   //判断是否需要更新.
   if(!file_exists($cache_file))
{
      return true;
   }
elseif(filemtime($tpl_file) > filemtime($cache_file))
{
      return true;
   }
}

function parse_tpl($tpl_index,$message='')
{
   return $this->cache_path . $tpl_index . '.php';
}

function load_tpl($tpl_index)
{
   $tpl_file = $this->tpl_path . $tpl_index . '.html';
   $fp = fopen($tpl_file, 'r');
   $this->template = fread($fp, filesize($tpl_file));
   fclose($fp);
}

function write_cache($tpl_index)
{

   $cache_file = $this->cache_path . $tpl_index . '.php';

   //变量显示.
   $this->template = preg_replace("/({=)(.+?)(})/is", "", $this->template);

   //界面语言替换.
   $this->template = preg_replace("/{lang +(.+?)}/ies", "$lang['main']['\1']", $this->template);

$fp = fopen($cache_file, 'w');
flock($fp, 3);
fwrite($fp, $this->template);
fclose($fp);
}

function assign_block($search,$replace)
{
   $this->template = str_replace($search,$replace,$this->template);
}
}
?>

一个PHP模板,主要想体现一下思路

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