register_resource
注册资源
Use this to dynamically register a resource plugin with Smarty.
Pass in the name of the resource and the array of PHP functions
implementing it. See template
resources for more information on how to setup a function for
fetching templates.
动态注册一个资源插件，前两个参数是资源的名称和执行函数的数组。关于如何建立一个函数取出模板，请看模板资源部分。
Technical Note: A resource name must be at least two characters in length. One character resource names will be ignored and used as part of the file path, such as $smarty->display('c:/path/to/index.tpl');
注意：资源的名称主要要有两个字符组成。一个字符的资源名 称将被忽略，并被视为是文件路径的一部分，比如$smarty->display('c:/path/to/index.tpl');。
The php-function-array
resource_funcs
must have 4 or 5 elements. With 4 elements the elements are the
functions-callbacks for the respective "source", "timestamp", "secure"
and "trusted" functions of the resource. With 5 elements the first
element has to be an object reference or a class name of the object or
class implementing the resource and the 4 following elements have to be
the method names implementing "source", "timestamp", "secure" and
"trusted".
执行函数数组必须包含4或5个元素。包含4个元素的情况下，这些函数分别是处理“source 源文本”、“timestamp 时间戳”、“secure 安全”、“trusted 可信的”的函数。5个元素的情况下，第一个元素必须是一个对象的引用，或者是一个类名，后面的4个元素是实现处理“source 源文本”、“timestamp 时间戳”、“secure 安全”、“trusted 可信的”的方法。