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31 lines
689 B
31 lines
689 B
<?php
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/**
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* 静态的作用是不用通过实例话，
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* 直接通过区域操作符:: 访问调用
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*/
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class ClassA{
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//静态属性
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public static $varA="这是一个静态属性";
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//静态方法
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public static function fnA() {
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echo "这个一个静态方法".PHP_EOL;
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}
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//对比this->和self::
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public static function fnB(){
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// echo $this->$varA; //this要通过对象来使用
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echo self::$varA;
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}
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}
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//访问静态属性
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echo ClassA::$varA.PHP_EOL;
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//访问静态方法
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ClassA::fnA();
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//对比this->和self::
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ClassA::fnB();
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?>
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