<?php
/****************
* 核心文件
* @discription: 编写简单的模板引擎
*/
define(‘INVIEW’, true);
class view {
var $tpl_dir = ‘template’;
var $cache_dir = ‘cache’;
var $tpl_ext = ‘.html’;
var $var_left = ‘{‘;
var $var_right = ‘}’;
function __construct($config=array()) {
extract($config);
if(isset($tpl_dir))$this->tpl_dir = $tpl_dir;
if(isset($cache_dir))$this->cache_dir = $cache_dir;
if(isset($tpl_ext))$this->tpl_ext = $tpl_ext;
if(isset($var_left))$this->var_left = $var_left;
if(isset($var_right))$this->var_right = $var_right;
}
function load($tplfilename) {
$tplfile = $this->tpl_dir.’/’.$tplfilename.$this->tpl_ext;
if(!file_exists($tplfile))
die(‘Template not found: ‘.$tplfile);
return $this->cache($tplfilename, $tplfile);
}
//判断模板是否缓存，如模板文件有更改则重新编译
function cache($tplname, $tpl_file) {
$cache_file = $this->cache_dir.’/’.md5($tplname).’.php’;
if(!file_exists($cache_file) || filemtime($tpl_file)>filemtime($cache_file))
$this->compile($tpl_file, $cache_file);
return $cache_file;
}
//编译模板内容到PHP格式，并写入缓存
function compile($tpl, $cache) {
$body = file_get_contents($tpl);
$vl = $this->var_left;
$vr = $this->var_right;
$patterns = array(
“#$vl\s*include:(.+?)\s*$vr#i”,
“#$vl\s*if\s+(.+?)\s*$vr#i”,
“#$vl\s*else\s*$vr#i”,
“#$vl\s*elseif\s+(.+?)\s*$vr#i”,
“#$vl\s*endif\s*$vr#i”,
“#$vl\s*/if\s*$vr#i”,
“#$vl\s*foreach\s+(.+?):(.+?)\s*$vr#i”,
“#$vl\s*endforeach\s*$vr#i”,
“#$vl\s*/foreach\s*$vr#i”,
“#$vl([0-9a-zA-Z_]+?)\.([0-9a-zA-Z_]+?)\.([0-9a-zA-Z_]+?)$vr#i”,
“#$vl([0-9a-zA-Z_]+?)\.([0-9a-zA-Z_]+?)$vr#i”,
“#$vl([0-9a-zA-Z_\[\]\’\”]+?)$vr#i”,
“#$vl([0-9a-zA-Z_]+?):(.*?)$vr#i”
);
$replacements = array(
“<?php include show(‘\\1’); ?>”,
“<?php if(\\1): ?>”,
“<?php else: ?>”,
“<?php elseif(\\1): ?>”,
“<?php endif; ?>”,
“<?php endif; ?>”,
“<?php if(count($\\1)>0):\$autoindex=0;foreach($\\1 as \\2):\$autoindex++; ?>”,
“<?php endforeach;endif; ?>”,
“<?php endforeach;endif; ?>”,
“<?php echo $\\1[‘\\2’][‘\\3’]; ?>”,
“<?php echo $\\1[‘\\2’]; ?>”,
“<?php echo $\\1; ?>”,
“<?php echo \\1(\\2); ?>”
);
$body = preg_replace($patterns, $replacements, $body);
file_put_contents($cache, “<?php if(!defined(‘INVIEW’))die(‘YIQU’); ?>”.$body);
}
}
$view = new view();
function show($tpl) {
global $view;
return $view->load($tpl);
}
?>
看到一个php的极简写法很好看
<?php
include ‘view.php’;
$title = ‘文档标题’;
$a=array(‘a’=>’rows’,’b’=>array(‘c’=>’inarray’));
include show(‘index’);
?>
<html>
<head>
<title>{title}</title>
<meta http-equiv=”Content-Type” content=”text/html;charset=utf-8″/>
</head>
<body>
你好，仅供参考<br/>
{a.a}
{a.b.c}<br/>
{foreach a:$v}
{autoindex}.{v}<br/>
{/foreach}
</body>
</html>
{include:footer}