正则表达式过滤-模仿表达式引擎的模板解析

 preg_match('~{(\w+)}(.+?){/\1}~s', $r, $m);

内容将以百万美元计[2]。

不过,这并不能处理筑巢问题。

/编辑:完整示例

    $text = "
    foo {single1=abc}
    bar {double1} one {/double1}
    foo {single2=def}
    bar {double2} two {/double2}


    ";

    $tag = '~
        {(\w+)}(.+?){/\1}
        |
        {(\w+)=(.+?)}
    ~six';

    preg_match_all($tag, $text, $m, PREG_SET_ORDER);
    foreach($m as $p) {
        if(isset($p[3]))
            echo "single $p[3] with param $p[4]\n";
        else
            echo "double $p[1] with content $p[2]\n";
    }

'/\{[^\/]*\}/iU'