Analysis of php delayed static binding instances

This article mainly introduces php delayed static binding. The example analyzes the principle and implementation skills of delayed static binding. For more information, see the example in this article. Share it with you for your reference. The specific analysis is as follows:

Php delayed static binding: refers to the class self, which is not defined at the time of definition, but the running result at the time of calculation. First look at an instance

 Say ();?>

Note:

(1) when the subclass instantiate object $ stu calls the say method, it runs in the parent class Human. Therefore, self: hei () in say () is to call the hei () method of the parent class.

(2) static: method name (): If you use the static keyword, you first need to find the method in the subclass. if you cannot find the method, you can find it in the parent class.

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