入队一个函数(如 wordpress add_action) [英] Enqueue a function (like wordpress add_action)

问题描述

如何在 PHP 中对函数进行排队?我需要一些像 Wordpress 的 add_action 系统一样工作的东西.我想要 enqueue 函数，然后在适当的时候运行.

How do I queue functions in PHP? I need something that works just like Wordpress's add_action system. I want enqueue function which then runs when the time is right.

这似乎完美地工作.任何人有任何改进我的代码的提示吗?

This seems to work perfectly. Anyone got any tips to improve my code?

 $enqueued_actions = array();

 /**
  * Enqueue an action to run at a later time.
  * @param string  $hook The hook name.
  * @param obj  $func The function object.
  * @param integer $imp  The level of importance from 0-9
  */
 function add_action($hook, $func, $imp = 0) {

     global $enqueued_actions;

     $enqueued_actions[$hook][] = array('func' => $func, 'imp' => $imp);
 }

 /**
  * Run the enqueued actions with the correct hook.
  * @param  string $hook Hook name.
  */
 function run_action($hook) {

     global $enqueued_actions;

     $actions = $enqueued_actions[$hook];

     for($i = 0; $i < 9; $i++) {
         foreach($enqueued_actions[$hook] as $action) {
             if($action['imp'] == $i) {
                call_user_func($action['func']);
            }
         }     
     }

 }

推荐答案

您走对了这里.不过，您可能希望使钩子持久化，即将钩子保存到数据库、CSV 文件、XML 对象模型等中.

You are on the right track here. You might want to make the hooks persistent, though, i.e. saving the hooks into a database, a CSV file, an XML object model, etc.

另外，你可能想引入一个函数来调用所有被锁定到某个钩子的动作，比如 call_actions($hook);

Also, you might want to introduce a function for the sake of calling all the actions that have been latched to a certain hook, something like call_actions($hook);

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