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<?php $anonymous = new class { public function echoMsg(): void { echo 'Hello World' . PHP_EOL; } }; // get_class($anonymous) で無名クラスのPHP内での名前を得る // class_alias で IHaveName というクラス名のエイリアスを作る class_alias(get_class($anonymous), 'IHaveName'); // 無名クラスのエイリアスである IHaveName を継承させる class ExtendAnonymous extends IHaveName { } // 動く $instance = new ExtendAnonymous(); $instance->echoMsg(); // Hello World var_dump($instance); // object(ExtendAnonymous)#1 (0) {} var_dump(get_class($instance)); // string(15) "ExtendAnonymous" var_dump($instance instanceof $anonymous); // bool(true)
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1 - 8.4.2
Hello World object(ExtendAnonymous)#2 (0) { } string(15) "ExtendAnonymous" bool(true)
Output for 7.0.0 - 7.0.33
Hello World Fatal error: Uncaught TypeError: Return value of class@anonymous::echoMsg() must be an instance of void, none returned in /in/ZoV4D:7 Stack trace: #0 /in/ZoV4D(19): class@anonymous->echoMsg() #1 {main} thrown in /in/ZoV4D on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/ZoV4D on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CLASS in /in/ZoV4D on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_CLASS, expecting T_STRING or T_VARIABLE or '$' in /in/ZoV4D on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_CLASS, expecting T_STRING or T_VARIABLE or '$' in /in/ZoV4D on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `'$'' in /in/ZoV4D on line 3
Process exited with code 255.
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