PHP object-oriented static late binding static::

The content of this article is about PHP object-oriented static delayed binding static::, which has a certain reference value. Now I share it with you. Friends in need can refer to it.

self represents the current class , static:: represents the last executed class (also known as static delayed binding)

Above code:

<?php

class School{
	const COUNT = 56;
	public function showInfo(){
		echo self::COUNT;
		echo &#39;<br/>&#39; . static::COUNT;          //static::代表最后执行类，self代表当前类，parent代表父类
	}
}
class University extends School{
	const COUNT = 10000;
}
$school = new University;
$school -> showInfo();

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