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一个小型Php模板引擎

时间：2009-10-10

来源：互联网

一个小型的php模板引擎，结合dz模板封装的。

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<?php
/**
* 文件名: template.class.php
* 功能: 模板引擎
* 使用方法：inlucde此文件，输出模板的时候：include Template::showTemplate($tpl);
* $tpl 为字符串是模板的副目录名/文件名
* 示例代码如下：
***********************************php程序********************************************************
* inlucde('template.class.php');
* $sHello = 'hello world';
* $aUsers = array(
* 'one' =>array(
* 'user'=>'user1',
* 'sex' =>'f',
* 'age' =>21
* ),
* 'two' =>array(
* 'user'=>'user2',
* 'sex' =>'f',
* 'age' =>22
* ),
* 'three' =>array(
* 'user'=>'user3',
* 'sex' =>'f',
* 'age' =>23
* ),
* 'four' =>array(
* 'user'=>'user4',
* 'sex' =>'f',
* 'age' =>24
* ),
* 'five' =>array(
* 'user'=>'user5',
* 'sex' =>'f',
* 'age' =>25
* ),
* 'sex' =>array(
* 'user'=>'user6',
* 'sex' =>'f',
* 'age' =>26
* ),
* 'seven' =>array(
* 'user'=>'user7',
* 'sex' =>'f',
* 'age' =>27
* )
* );
* include Template::showTemplate('test');
**************************************xhtml页面********************************************************
* 模板文件写法：
* 直接输出变量：或者
* 逻辑输出写法(if...else):变量为空
* 数组输出写法：
*
twoone<br />
$value[sex]<br />
$value[age]<br />
*
* 调用模板写法：或者
* templateName为模板文件名，注：不带扩展名|| dir为副目录名，name为模板文件名
* 测试环境目录结构为：
* template
* |________cache
* |
* |________default
* | |
* | |______admin
* | | |
* | | |____index.htm
* | | |
* | | |____admin.htm
* | |
* | |______article
* | |
* | |_______cateList.htm
* | |
* | |_______index.htm
* |
* |
* |_______template.class.php
* |
* |_______test.php
*
* 版权: 七夜
* 作者: 七夜, qq：64438136, email : [email protected], msn : [email protected]
* 创建日期: 2008-2-25
* 修改日期
*/
class Template
{
/**
*全局成员数组
*/
static private $sGlobal = array(
'i' => 0,
'block_search' =>array(),
'block_replace' => array()
);
/**
*选择模板目录
*/
static private $sSelectTemplatePath = 'default';
/**
*模板目录
*/
static private $sTemplateDir = 'template';
/**
*检测模板更新:设置0为永远不检测，设置1总是检测
*/
static private $nTemplateRefresh = 1;
/**
*模板缓存时间，必须开启模板更新检测也有效
*/
static private $nTemplateCacheTime = 3600;
/**
* 构造方法
*/
function __construct()
{
//......
}
/**
* 输出模板
* @param string $name
* @return string
*/
static public function showTemplate($name)
{
$tpl = Template::$sTemplateDir.'/'.Template::$sSelectTemplatePath.'/'.$name;
$objfile = Template::$sTemplateDir.'/cache/'.str_replace('/','_',$tpl).'.php';
if(!file_exists($objfile))
{
include_once('./template.class.php');
Template::parse_template($tpl);
}
return $objfile;
}
/**
* 子模板更新检查
* @function checkCacheTemplate
* @param string $subfiles,$mktime,$tpl
* @return void
*/
static public function checkCacheTemplate($subfiles, $mktime, $tpl)
{
if(Template::$nTemplateRefresh && (Template::$nTemplateRefresh == 1 || mt_rand(1, Template::$nTemplateRefresh) == 1))
{
$subfiles = explode('|', $subfiles);
foreach ($subfiles as $subfile)
{
@$submktime = filemtime($subfile.'.htm');
$endTime = time() - $submktime;
if($submktime > Template::$nTemplateCacheTime)
{
include_once('./template.class.php');
Template::parse_template($tpl);
break;
}
}
}
}
/**
* 模板解析
* @function parse_template
* @param string $tpl
* @return void
*/
static private function parse_template($tpl)
{
//包含模板
Template::$sGlobal['sub_tpls'] = array($tpl);
$tplfile = $tpl.'.htm';
$objfile = Template::$sTemplateDir.'/cache/'.str_replace('/','_',$tpl).'.php';
//read Template
$template = Template::readContents($tplfile);
if(empty($template)) {
exit(Template::showError("Template file : $tplfile Not found or have no access!"));
}
//模板
$template = preg_replace("/\<\!\-\-\{template\s+([a-z0-9_\/]+)\}\-\-\>/ie", "Template::readTemplateContents('\\1')", $template);
// print $template;
//处理子页面中的代码
$template = preg_replace("/\<\!\-\-\{template\s+([a-z0-9_\/]+)\}\-\-\>/ie", "Template::readTemplateContents('\\1')", $template);
//PHP代码
$template = preg_replace("/\<\!\-\-\{eval\s+(.+?)\s*\}\-\-\>/ies", "Template::evaltags('\\1')", $template);
//start
//变量
$var_regexp = "((\\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)(\[[a-zA-Z0-9_\-\.\"\'\[\]\$\x7f-\xff]+\])*)";
$template = preg_replace("/\<\!\-\-\{(.+?)\}\-\-\>/s", "{\\1}", $template);
$template = preg_replace("/([\n\r]+)\t+/s", "\\1", $template);
$template = preg_replace("/(\\\$[a-zA-Z0-9_\[\]\'\"\$\x7f-\xff]+)\.([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)/s", "\\1['\\2']", $template);
$template = preg_replace("/\{(\\\$[a-zA-Z0-9_\[\]\'\"\$\.\x7f-\xff]+)\}/s", "<?=\\1?>", $template);
$template = preg_replace("/$var_regexp/es", "Template::addquote('<?=\\1?>')", $template);
$template = preg_replace("/\<\?\=\<\?\=$var_regexp\?\>\?\>/es", "Template::addquote('<?=\\1?>')", $template);
//逻辑
$template = preg_replace("/\{elseif\s+(.+?)\}/ies", "Template::stripvtags('<?php } elseif(\\1) { ?>','')", $template);
$template = preg_replace("/\{else\}/is", "<?php } else { ?>", $template);
//循环
for($i = 0; $i < 5; $i++)
{
$template = preg_replace("/\{loop\s+(\S+)\s+(\S+)\}(.+?)\{\/loop\}/ies", "Template::stripvtags('<?php if(is_array(\\1)) { foreach(\\1 as \\2) { ?>','\\3<?php } } ?>')", $template);
$template = preg_replace("/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}(.+?)\{\/loop\}/ies", "Template::stripvtags('<?php if(is_array(\\1)) { foreach(\\1 as \\2 => \\3) { ?>','\\4<?php } } ?>')", $template);
$template = preg_replace("/\{if\s+(.+?)\}(.+?)\{\/if\}/ies", "Template::stripvtags('<?php if(\\1) { ?>','\\2<?php } ?>')", $template);
}
//常量
$template = preg_replace("/\{([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/s", "<?=\\1?>", $template);
//替换
if(!empty(Template::$sGlobal['block_search']))
{
$template = str_replace(Template::$sGlobal['block_search'], Template::$sGlobal['block_replace'], $template);
}
//换行
$template = preg_replace("/ \?\>[\n\r]*\<\? /s", " ", $template);
//附加处理
$nTemplateRefresh = Template::$nTemplateRefresh;
$template = "<?php Template::checkCacheTemplate('".implode('|', Template::$sGlobal['sub_tpls'])."', $nTemplateRefresh, '$tpl');?>\r\n$template";
//write
if(!Template::writeTemplateCacheContents($objfile, $template))
{
exit(Template::showError("File: $objfile can not be write!"));
}
}
/**
* php变量
* @function addquote
* @param string $var
* @return string
*/
static private function addquote($var)
{
return str_replace("\\\"", "\"", preg_replace("/\[([a-zA-Z0-9_\-\.\x7f-\xff]+)\]/s", "['\\1']", $var));
}
/**
* php变量
* @function striptagquotes
* @param string $expr
* @return string
*/
static private function striptagquotes($expr)
{
$expr = preg_replace("/\<\?\=(\\\$.+?)\?\>/s", "\\1", $expr);
$expr = str_replace("\\\"", "\"", preg_replace("/\[\'([a-zA-Z0-9_\-\.\x7f-\xff]+)\'\]/s", "[\\1]", $expr));
print $expr;
}
/**
* php标签
* @function evaltags
* @param string $php
* @return string
*/
static private function evaltags($php)
{
$i = Template::$sGlobal['i']++;
$search = "";
Template::$sGlobal['block_search'][Template::$sGlobal['i']] = $search;
Template::$sGlobal['block_replace'][Template::$sGlobal['i']] = "<?php ".Template::stripvtags($php)." ?>";
return $search;
}
/**
* 替换输出标签
* @function stripvtags
* @param string $expr,$statement
* @return string
*/
static private function stripvtags($expr, $statement='')
{
$expr = str_replace("\\\"", "\"", preg_replace("/\<\?\=(\\\$.+?)\?\>/s", "\\1", $expr));
$statement = str_replace("\\\"", "\"", $statement);
return $expr.$statement;
}
/**
* 读取模板
* @function readTemplateContents
* @param string $name
* @return string
*/
static private function readTemplateContents($name)
{
$tpl = Template::$sTemplateDir.'/'.Template::$sSelectTemplatePath.'/'.$name;
Template::$sGlobal['sub_tpls'][] = $tpl;
$file = $tpl.'.htm';
$content = Template::readContents($file);
return $content;
}
/**
* 读取文件内容
* @function readContents
* @param string $filename
* @return string
*/
static private function readContents($filename)
{
$content = '';
if(function_exists('file_get_contents'))
{
@$content = file_get_contents($filename);
}else
{
if(@$fp = fopen($filename, 'r'))
{
@$content = fread($fp, filesize($filename));
@fclose($fp);
}
}
return $content;
}
/**
* 写入文件
* @function writeTemplateCacheContents
* @param string $filename,$writetext,$openmod
* @return boolean
*/
static private function writeTemplateCacheContents($filename, $writetext, $openmod='w')
{
if(@$fp = fopen($filename, $openmod))
{
flock($fp, 2);
fwrite($fp, $writetext);
fclose($fp);
return true;
} else
{
exit(Template::showError('error'. "File: $filename write error."));
return false;
}
}
/**
* 显示错误信息
* @function showError
* @param string $message
* @return void
*/
static private function showError($message)
{
print $message;
}
/**
*析构方法
*/
function __destruct()
{
//......
}
}
?>