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<?php class A { public static function hi() { echo __CLASS__,' -> A'; } public static function test() { // self::hi(); // 调用当前A类 A::hi(); 输出 A -> A // static::hi(); // 调用子B类 B::hi()覆盖了A::hi(); 输出 B -> B static::child(); // 调用子B类 B::child() // self::child(); // Fatal error: Call to undefined method A::child() } } class B extends A { public static function hi() { echo __CLASS__,' -> B'; } public static function child() { echo 'child'; } } B::test(); A::test();
Output for git.master, git.master_jit, rfc.property-hooks
child Fatal error: Uncaught Error: Call to undefined method A::child() in /in/gf1vV:10 Stack trace: #0 /in/gf1vV(25): A::test() #1 {main} thrown in /in/gf1vV on line 10
Process exited with code 255.

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