这是一个简单的用php 实现的模板教程物。
class TEMPLATE
{
private $path = "." ; #根目录
private $var;
private $tplDir = "template"; #模板存储目录
private $tplExt = "tpl"; #模板文件的后缀名
private $tplId = 0 ; #模板的ID号
private $compileDir = "template_c"; #编译后的php文件存放目录
private $isCache=false ; #是否用缓存 （默认不启动）
private $cacheId = 1; #缓存文件ID号
private $cacheLeftTime=3600; #缓存有效期 (默认保存3600秒)
private $cacheDir = "cache"; #缓存文件存储目录
private $autoRefresh = false ; #是否自动刷新
private $pattern = array(
"/({dw:)s*includes*filename=s*"(.+..+)s*"s*(/})/i",#包含文件
"/({dw:)s*field.(.+)s*(/})/i",#局部变量
"/({dw:)s*global.(.+)s*(/})/i",#全局变量
"/({dw:)s*foreachs*(.+)s*ass*(.+)s*(/})/i",#foreach 语句
"/({dw:)s*ends*foreachs*(/})/i", #foreach 结束
"/({dw:)s*ifs*((.+))(/})/i",
"/({dw:)s*elseifs*((.+))(/})/i",
"/({dw:)s*elses*(/})/i",
"/({dw:)s*ends*ifs*(/})/i",
);
private $replacement = array(
'inc_file("\2"); ?>',
"",
"",
"",
"",
"" ,
"",
"",
"",
);
#构造函数
function __construct($path = "", $tplDir="", $compileDir="",$isCache="",$cacheLeftTime="",$cacheDir="" ,$autoRefresh="")
{
$this->path = $path ? $path : $this->path ;
$this->tplDir = $tplDir ? $tplDir : $this->tplDir ;
$this->compileDir = $compileDir ? $compileDir : $this->compileDir ;
$this->isCache = is_bool($isCache) ? $isCache : $this->isCache ;
$this->cacheLeftTime = $cacheLeftTime ? $cacheLeftTime : $this->cacheLeftTime ;
$this->cacheDir = $cacheDir ? $cacheDir : $this->cacheDir ;
$this->autoRefresh = is_bool($autoRefresh) ? $autoRefresh : $this->autoRefresh ;
}
#兼容php4
function TEMPLATE($path = "", $tplDir="", $compileDir="",$isCache="",$cacheLeftTime="",$cacheDir="" ,$autoRefresh="")
{
$this->__construct($path = "", $tplDir="", $compileDir="",$isCache="",$cacheLeftTime="",$cacheDir="" ,$autoRefresh="");
}
function __get($property)
{
return $this->$property ;
}
function __set($property,$value)
{
return $this->$property = $value ;
}
#给模板中的变量赋值
# $tplVal 模板中的变量名
function assign($tplVal ,$value="")
{
if (is_array($tplVal))
{
foreach ($tplVal as $key => $val)
{
if (!empty($key))
$this->var[$key] = $val ;
}
}
else {
if (!empty($tplVal))
$this->var[$tplVal] = $value ;
}
}
#输出文件内容函数
function display($tplFile,$tplId=0,$cacheId = 1,$cacheLeftTime="")
{
if (empty($tplFile)) die("Template "{$tplFile}" not exist !");
$this->cacheId = $cacheId ? md5($cacheId) : md5($this->cacheId);
$cacheFile = $this->path. "/".$this->cacheDir."/".$tplFile.$this->cacheId ;
if ($this->check_cache($cacheFile,$cacheLeftTime)) #当缓存文件存在且不过期时直接从缓存文件读取内容
{
echo $this->read_file($cacheFile);
}else {
$tpl = $this->path."/".$this->tplDir."/".$tplFile.".".$this->tplExt;
$tplContent = $this->read_file($tpl); #读取模板文件的内容
$compileContent= $this->compile_file($tplContent); #对读取出来的文件进行编译
$this->tplId = $tplId ? $tplId : $this->tplId ;
$compileFile = $this->path."/".$this->compileDir."/".md5($this->tplId)."".$tplFile.".php";
$this->write_file($compileFile,$compileContent);#将编译后的内容写入相应的文件中;
@extract($this->var);
ob_start();
include_once($compileFile);
$content = ob_get_contents() ;
ob_end_clean() ;
if ($this->isCache){
$this->write_file($cacheFile,$content) ;# 帮编译好的内容写入缓存文件
}
echo $content ;
}
}
/* function trim_tag($content)
{
$content = str_replace($this->startTag,"",$content);
$content = str_replace($this->endTag,"",$content);
//$content = trim($content);
return $content ;
}*/
# 编译文件函数
function compile_file($content=null)
{
$content = $content ? $content :die("Compile fail!") ;
//$content = $this->trim_tag($content);
$content = preg_replace($this->pattern,$this->replacement,$content);
return $content;
}
#解析包含文件
function inc_file($filename,$tplId="",$cacheId="",$cacheLeftTime="")
{
$file = $this->path."/".$this->tplDir."/".$filename ;
if (file_exists($file))
{
$filename = str_replace(".".$this->tplExt,"",$filename);
return $this->display($filename,$tplId,$cacheId,$cacheLeftTime);
}
else die("Template "{$filename}" not exist");
}
#读取文件内容函数
function read_file($filename)
{
if (!file_exists($filename)) die("Read file fail") ;
return file_get_contents($filename);
}
#内容写入函数
function write_file($filename,$content,$mode="wb")
{
$filename = trim($filename);
$content = $content ? stripslashes(trim($content)) : exit();
if (!file_exists($filename))
{
$array = explode("/",$filename);
$count = count($array);
$path = "";
for ($i = 0 ; $i
{
if(!file_exists($path .= $array[$i]."/"))
{
mkdir($path,0777);
}
}
}
$handle = fopen($filename,$mode) ;
fwrite($handle,$content);
fclose($handle);
return true;
}
# 清除缓存
function clear_dir($dir="")
{
$dir = $this->path."/".$dir;
$handle = opendir($dir);
if (file_exists($dir))
{
while ($file = readdir($handle))
{
if ($file !="." && $file != "..")
unlink($dir."/".$file);
}
closedir($handle);
return true;
}
else {
return false;
}
}
#清除所有缓存
function clear_all_cache()
{
if ($this->clear_dir($this->cacheDir) && $this->clear_dir($this->compileDir))
return true;
}
#检查缓存是否过期
function check_cache($cacheFile,$cacheLeftTime="")
{
$cacheLeftTime = $cacheLeftTime ? $cacheLeftTime : $this->cacheLeftTime;
if (!file_exists($cacheFile)) return false ;
$time = $this->get_time($cacheFile) + $cacheLeftTime ;
if ($time
{
unlink($cacheFile);
return false;
}
return true;
}
# 获取文件最后编辑时间
function get_time($filename)
{
if (!file_exists($filename)) return false;
return filemtime($filename);
}
}
