从 eval() 生成 lambda 函数

发布于 2024-10-14 23:51:36 字数 684 浏览 1 评论 0原文

我有几个助手 - 我想将每个助手的方法重新声明为 lambda 匿名函数。

我试图通过获取辅助方法，然后执行 eval 函数来实现此目的，但它不起作用，我收到解析错误。

我当前的代码：

            foreach($this->helpers as $helper)
            {
                include(master_path . 'helpers/'.$helper.'Helper.php');

                $helperClass = new applicationHelper();
                $methods = get_class_methods($helperClass);
                foreach($methods as $method )
                {

                    eval ( "\$$method = function (\$text) {
                        \$helperClass->$method(\$text);
                    }");

                }
             }

由于效率担忧 - 如果您知道，我想要一个更好的解决方案它，谢谢！谢谢你们！

原文

I have few helpers - I want to redclare each helper's method as a lambda anonymous function.

I'm trying to do it by getting the helpers methods, and then doing an eval function, but it wont work, im getting parse error..

My current code:

            foreach($this->helpers as $helper)
            {
                include(master_path . 'helpers/'.$helper.'Helper.php');

                $helperClass = new applicationHelper();
                $methods = get_class_methods($helperClass);
                foreach($methods as $method )
                {

                    eval ( "\$method = function (\$text) {
                        \$helperClass->$method(\$text);
                    }");

                }
             }

Due to efficiency fears - I'd like a better solution if you know it, thanks!
Thanks Guys!

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夜巴黎 2024-10-21 23:51:36

这应该可行：

foreach($methods as $method )
{
    $method = function($text) use ($method, $helperClass) {
        return $helperClass->$method($text);
    }
}

但仍然不知道你为什么这样做。

编辑
需要 PHP 5.3.x ->看这里匿名函数

That should work:

foreach($methods as $method )
{
    $method = function($text) use ($method, $helperClass) {
        return $helperClass->$method($text);
    }
}

But still dont know why are you doing that.

EDIT
PHP 5.3.x needed -> look here Anonymous funcions

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深者入戏 2024-10-21 23:51:36

foreach ($this->helpers as $helper) {
    include(master_path . 'helpers/'.$helper.'Helper.php');

    $helperClass = new applicationHelper();
    foreach (get_class_methods($helperClass) as $method) {
        $method = function($text) use($helperClass, $method) {
            $helperClass->$method($text);
        };
    }
}

这样就摆脱了缓慢的eval。

foreach ($this->helpers as $helper) {
    include(master_path . 'helpers/'.$helper.'Helper.php');

    $helperClass = new applicationHelper();
    foreach (get_class_methods($helperClass) as $method) {
        $method = function($text) use($helperClass, $method) {
            $helperClass->$method($text);
        };
    }
}

That get's rid of the slow eval.

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