自己默写smarty模板引擎,不解析php呢(求高手帮忙)

  $realcontent  =$this->filecontent;


$mode = '/\{\$([\w]+)\}/';
if(preg_match($mode,$realcontent)){

var_dump($assign_vars);

$realcontent=preg_replace($mode,"<?php echo \$this->assign_vars['$1'] ?>",$realcontent); ;//替换成index.php文件中注入的变量


}
return $realcontent;

 
 }  

运行后代码为
<?php echo $this->assign_vars['content'] ?>

作者:<?php echo $this->assign_vars['name'] ?><?php echo $this->assign_vars['var'] ?>

回复讨论(解决方案)

<?php$realcontent = file_get_contents("template_test.html");$tpl_string = <<< TEMPLEATE                                    作者:{\$name}        国家:{\$china}        省份:{\$provice}        城市:{\$city}    TEMPLEATE;$mode = '/\{\$(\w+)\}/';$assign_arr = array();function assign($name, $value) {        global $assign_arr;    $assign_arr[$name] = empty($value) ? '' : $value;        return $assign_arr;}function replace_content($match) {    global $assign_arr;    if (!empty($match)) {                return array_key_exists($match[1], $assign_arr) ? $assign_arr[$match[1]] : '';    }}assign("title", "I love you");assign("name", "iseagold");assign("china", "中国");assign("provice", "广东省");assign("city", "深圳市");assign("no", "页面不存在,未取出的变量");echo preg_replace_callback($mode, "replace_content", $tpl_string);//===================================简单的类版本==========================================================class Template {    public $assign_items = array();    public $content;        function __construct($file) {        $this->content = file_get_contents($file);    }    function assign($name, $value) {        $this->assign_items[$name] = empty($value) ? "" : $value;    }    function replace() {        $arr_assign_items = array();        $content = '';        $content = $this->content;        $arr_assign_items = $this->assign_items;                $pattern = '/\{\$(\w+)\}/';        $this->content = preg_replace_callback($pattern, function($match) use($arr_assign_items) {            if (!empty($match)) {                                                      if (array_key_exists($match[1], $arr_assign_items)) {                    echo $arr_assign_items[$match[1]];                    return $arr_assign_items[$match[1]];                }            }        }, $content);    }    function display() {        echo $this->content;    }}$template = new Template("template_test.html");$template->assign("title", "I love you");$template->assign("name", "iseagold");$template->assign("china", "中国");$template->assign("provice", "广东省");$template->assign("city", "深圳市");$template->assign("no", "页面不存在,未取出的变量");$template->replace();$template->display();?>

smarty 3 以后默认不支持PHP 混写了 换成 smarty 2 就可以了

笔误了, 是模仿写 ,不是默写...

笔误了, 是模仿写 ,不是默写...

你只产生了 php 代码，并没有执行他