• 코드:
​x
 
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<!DOCTYPE html>
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<html lang="ko">
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​
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<head>
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    <meta charset="UTF-8">
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    <title>PHP OOP</title>
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</head>
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​
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<body>
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​
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<?php
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    class A
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    {
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        public static function className() {
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            echo __CLASS__;
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        }
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        public static function printClass() {
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            static::className();
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        }
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    }
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​
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    class B extends A
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    {
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        public static function className() {
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            echo __CLASS__;
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        }
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    }
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​
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    B::printClass();    // B
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?>
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​
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</body>
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​
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</html>