Example analysis of _initialize method in thinkPHP

The example in this article describes the _initialize method in thinkPHP. Share it with everyone for your reference, the details are as follows:

The _initialize method of the subclass automatically calls the _initialize method of the parent class. As for PHP's constructor construct, if you want to call a method of the parent class, you must explicitly call parent::__construct();

<?php
class BaseAction extends Action { // 继承Thinkphp
  protected function _initialize() { // thinkphp中的函数
    echo "Base class";
  }
}

If the subclass does not have an _initialize method in the subclass constructor , the _initialize method of the parent class is called by default.

Output: Base class

If there is, execute your own _initialize method.

Output: hello I am child

If executed simultaneously, write like this

<?php
class IndexAction extends BaseAction {
  public function _initialize(){ // 如果子类存在initialize,则不执行父类的内容
    parent::_initialize(); // 加上这一句，才执行父类的初始化函数
    echo "hello I am child";
  }
}

Output: Base class hello I am child

I hope this article will be helpful to everyone’s PHP programming based on the ThinkPHP framework.

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