模板引擎?No 正则而已

/**
 * 模板函数
 * @param string $template 模板文件名
 * @param string $path  模板路径
 * @param string $suffix 模板后缀
 */
function template($template = '', $path = '', $suffix = '', $show_error = true) {
    $tpl_path = $path ? $path : (config('tpl_path') ? config('tpl_path') : './template/');
    $tpl_suffix = $suffix ? $suffix : (config('tpl_suffix') ? config('tpl_suffix') : '.html');
    if (empty($template)) {
        $template_file = $tpl_path . __MODULE__ . '/' . __CONTROLLER__ . '/' . __ACTION__;
    } else {
        if (!$path) {
            $pcount = substr_count($template, '/');
            if ($pcount == 0) {
                $template_file = $tpl_path . __MODULE__ . '/' . __CONTROLLER__ . '/' . trim($template, '/');
            } else if ($pcount == 1) {
                $template_file = $tpl_path . __MODULE__ . '/' . trim($template, '/');
            } else {
                $template_file = $tpl_path . trim($template, '/');
            }
        } else {
            $template_file = $path . trim($template, '/');
        }
    }
    $template_file .= $tpl_suffix;
    if (!is_file($template_file)) {
        if ($show_error === true) {
            halt('模板文件不存在:' . $template_file);
        }
    } else {
        $cache_template = DATA_PATH . 'cache' . _DIR . 'template' . _DIR . __MODULE__ . _DIR . md5($template_file) . '.php';
        if (is_file($cache_template) && config('tpl_cache') == true && (config('tpl_expire') == 0 || (@filemtime($cache_template) + config('tpl_expire')) < time())) {
            
        } else {
            template::template_compile($template_file, $cache_template);
        }
        return $cache_template;
    }
}

<?php

class template {

    /**
     * 编译模板
     * @param string  $template_file 模板文件
     * @param string $cache_file 缓存文件
     */
    public static function template_compile($template_file, $cache_file) {
        if (!is_file($template_file)) {
            return false;
        }
        $content = file_get_contents($template_file);
        $cache_dir = dirname($cache_file);
        if (!is_dir($cache_dir)) {
            mkdir($cache_dir, 0777, true);
        }
        $content = self::parse_template($content);
        @file_put_contents($cache_file, $content);
        return $cache_file;
    }

    public static function parse_template($str) {
        //include
        $str = preg_replace("/{templates+(.+)}/", "<?php include template(\1,'','','',false); ?>", $str);
        $str = preg_replace("/{includes+(.+)}/", "<?php include \1; ?>", $str);        
        
        $str = preg_replace("/{phps+(.+?)}/", "<?php \1?>", $str);
        $str = preg_replace("/{!(.+?)}/", "<?php \1?>", $str);
        $str = preg_replace("/{ifs+(.+?)}/", "<?php if(\1) { ?>", $str);
        $str = preg_replace("/{else}/", "<?php } else { ?>", $str);
        $str = preg_replace("/{elseifs+(.+?)}/", "<?php } elseif (\1) { ?>", $str);
        $str = preg_replace("/{/if}/", "<?php } ?>", $str);
        //for
        $str = preg_replace("/{fors+(.+?)}/", "<?php for(\1) { ?>", $str);
        $str = preg_replace("/{/for}/", "<?php } ?>", $str);
        //++ --         
        $str = preg_replace("/{++(.+?)}/", "<?php ++\1; ?>", $str);
        $str = preg_replace("/{--(.+?)}/", "<?php ++\1; ?>", $str);
        $str = preg_replace("/{(.+?)++}/", "<?php \1++; ?>", $str);
        $str = preg_replace("/{(.+?)--}/", "<?php \1--; ?>", $str);
        //loop
        $str = preg_replace("/{loops+(S+)s+(S+)}/", "<?php $n=1;if(is_array(\1)) foreach(\1 AS \2) { ?>", $str);
        $str = preg_replace("/{loops+(S+)s+(S+)s+(S+)}/", "<?php $n=1; if(is_array(\1)) foreach(\1 AS \2 => \3) { ?>", $str);
        $str = preg_replace("/{/loop}/", "<?php $n++;}unset($n); ?>", $str);
        //函数
        $str = preg_replace("/{:([a-zA-Z_-�][a-zA-Z0-9_-�:]*(([^{}]*)))}/", "<?php echo \1;?>", $str);
        $str = preg_replace("/{~([a-zA-Z_-�][a-zA-Z0-9_-�:]*(([^{}]*)))}/", "<?php \1;?>", $str);
        //变量
        
        $str = preg_replace("/{\$([a-zA-Z_-�][a-zA-Z0-9_-�:]*(([^{}]*)))}/", "<?php echo \1;?>", $str);
        $str = preg_replace("/{(\$[a-zA-Z_-�][a-zA-Z0-9_-�]*)}/", "<?php echo \1;?>", $str);
        $str = preg_replace("/{\$([a-zA-Z_-�][a-zA-Z0-9_-�:]*->[a-zA-Z_-�][a-zA-Z0-9_-�:])}/", "<?php echo \1;?>", $str);
        $str = preg_replace("/{(\$[a-zA-Z_-�][a-zA-Z0-9_-�]*)|([^{}]*)}/", "<?php if(!empty(\1)){echo \1;}else{echo \2;}?>", $str);
        $str = preg_replace('/{(\$[a-zA-Z_-�][a-zA-Z0-9_-�]*(?:->)[^}]+)}/',"<?php echo \1;?>", $str);
        
        //数组
        $str = preg_replace("/{(\$[a-zA-Z0-9_[]'"$-�]+)}/es", "self::addquote('<?php echo \1;?>')", $str);
        $str = preg_replace("/{(\$[a-zA-Z0-9_[]'"$-�]+)|([^{}]*)}/es", "self::addquote('<?php if(!empty(\1)){echo \1;}else{echo \2;} ?>')", $str);

        //常量
        $str = preg_replace("/{([A-Z_-�][A-Z0-9_-�]*)}/s", "<?php echo \1;?>", $str);
        //扩展标签
        $str = preg_replace("/{tag:(w+)s+([^}]+)}/ie", "self::tag('$1','$2')", $str);
        $str = preg_replace("/{:tag:(w+)s+([^}]+)}/ie", "self::tag('$1','$2',true)", $str);
        return $str;
    }

    public static function addquote($var) {
        return str_replace("\"", """, preg_replace("/[([a-zA-Z0-9_-.-�]+)]/s", "['\1']", $var));
    }

    public static function tag($name, $data, $echo = false) {
        preg_match_all("/([a-z]+)=["]?([^"]+)["]?/i", stripslashes($data), $matches, PREG_SET_ORDER);

        foreach ($matches as $v) {
            if (in_array($v[1], array('action', 'cache', 'return'))) {
                $$v[1] = $v[2];
                continue;
            }

            $datas[$v[1]] = $v[2];
        }
        if (!isset($action) || empty($action)) { //方法
            return false;
        }
        if (isset($cache)) { //缓存
            $cache = intval($cache);
        } else {
            $cache = false;
        }
        if (!isset($return) || empty($return)) {
            $return = '$data';
        }
        $tag_file = EXT_PATH . 'tags' . _DIR . $name . '_tag' . EXT;
        if (!is_file($tag_file)) {
            return false;
        }
        $str = '<?php ';
        if ($cache !== false) {
            $cache_name =  'tag/'.$name.'_'.$action.  to_guid_string($datas);
            $str .= '$cache = cache::getInstance();';
            $str .= $return . '=$cache->get("' . $cache_name . '");';
            $str .= 'if(' . $return . ' === false){';
            $str .= '$params = ' . self::filter_var($datas) . ';';
            $str .= '$tag = load_ext("tags/' . $name . '_tag",true);';
            $str .= $return . '=$tag->' . $action . '($params);';
            $str .= '$cache->set("' . $cache_name . '",' . $return . ',' . $cache . ');';
            $str .= '}';
            if ($echo == true) {
                $str .= 'echo ' . $return . ';';
            }
            $str .= ' ?>';
        } else {

            $str .= '$params = ' . self::filter_var($datas) . ';';
            $str .= '$tag = load_ext("tags/' . $name . '_tag",true);';
            if ($echo) {
                $str .= 'echo $tag->' . $action . '($params);';
            } else {
                $str .= $return . '=$tag->' . $action . '($params);';
            }
            $str .= ' ?>';
        }
        return $str;
    }

    protected static function filter_var($data) {
        $str = var_export($data, true);
        //$str = preg_replace('/'$(w+?)'/', "$\1", $str);
        $str = preg_replace('/'/', '"', $str);
        $str = preg_replace('/s{2,}/', '', $str);
        return $str;
    }

}

public function test(){ 
    include template();        
}

{if !empty($result)}
				{loop $result $r}
				<tr>
					<td>{$r['order_sn']}</td>
					<td>{$r['name']}</td>
					<td>{$r['mobile']}</td>
					<td>{:fdate($r['add_time'])}</td>
					<td>{if $r['status'] == 0}处理中{elseif $r['status'] ==1}已处理{else}无效{/if}</td>
				</tr>
				{/loop}
				{else}
				<tr>
					<td colspan="9">
						<span style="padding:10px; display:block;">您还没有收到任何预约</span>
					</td>
				</tr>
				{/if}