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<?php interface A {} class B implements A {} class C extends B {} class D extends B implements A {} $bRef = new ReflectionClass('B'); $cRef = new ReflectionClass('C'); $dRef = new ReflectionClass('D'); echo 'B implements A: '.($bRef->implementsInterface('A') ? 'yes' : 'no').PHP_EOL; echo 'C implements A: '.($cRef->implementsInterface('A') ? 'yes' : 'no').PHP_EOL; echo 'D implements A: '.($dRef->implementsInterface('A') ? 'yes' : 'no').PHP_EOL; echo 'B subclass of A: '.($bRef->isSubclassOf('A') ? 'yes' : 'no').PHP_EOL; echo 'C subclass of A: '.($cRef->isSubclassOf('A') ? 'yes' : 'no').PHP_EOL; echo 'D subclass of A: '.($dRef->isSubclassOf('A') ? 'yes' : 'no').PHP_EOL;
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
B implements A: yes C implements A: yes D implements A: yes B subclass of A: yes C subclass of A: yes D subclass of A: yes
Output for 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/7NebX on line 13 B implements A: yesPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/7NebX on line 14 C implements A: yesPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/7NebX on line 15 D implements A: yesPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/7NebX on line 17 B subclass of A: yesPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/7NebX on line 18 C subclass of A: yesPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/7NebX on line 19 D subclass of A: yesPHP_EOL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/7NebX 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
Parse error: parse error, unexpected T_STRING in /in/7NebX on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/7NebX on line 3
Process exited with code 255.
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