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一个让人能绕晕的逻辑

本帖最后由 tp_2015_3 于 2015-06-02 12:47:28 编辑 为了便于说明,我用不同的颜色自然段说明吧
这是一个关于定义数组的问题
是在一个框架中,首先在类中定义了一个整合数组的方法

/**
 * 输出模板内容的数组,其他的变量不允许从程序中直接输出到模板
 */
private static $output_value = array();

public static function output($output,$input=''){
self::getInstance();

self::$output_value[$output] = $input;
}

在实际应用中,在一个文件里,这样写的
//板块信息
$model_web_config = Model('web_config');
$web_html = $model_web_config->getWebHtml('index');
Tpl::output('web_html',$web_html);

接着在模板中这里写的

好我的问题来了:
通过上面一系列的计算获得了数组库中的数据,并把数据放在数组里了。此时在模板中的写法首先要知道这个数组叫啥名,然后通过下标配合就能获得数组中的对应值 了,这时我的疑问来了,这里为啥数组名叫$output呢?
这个名是随便起还是说有上下文的约定呢,我看了一下上文,没有这个名字的定义呢,就突然出现,所以让人目瞪口呆!何解?


我目前的理解:也许有人会说是这句Tpl::output('web_html',$web_html);话中的output说明了,我认为不是,因为这里它是一个方法名,而不是数组名!按说上面已经定义了/**
 * 输出模板内容的数组,其他的变量不允许从程序中直接输出到模板
 */
private static $output_value = array();,为啥这里不用$output_value做数组名,而是用$output来做数组名呢,
------解决思路----------------------
可能是在 Tpl::output 的函数里面定义了  $output 这个数组
------解决思路----------------------
可能是output方法中定义了
<br />$web_html = array('index'=>'xxx');<br />output('web_html',$web_html);<br /><br />function output($key, $value){<br />	global $output;<br />	$output[$key] = $value;<br />	return $output;<br />}<br />echo $output['web_html']['index'];<br />


------解决思路----------------------
可能其他地方赋值了,比如:$output = $output_value;
具体要看完整的类如何写的
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