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<?php class Test extends SplFileInfo implements Serializable { public function __construct() {} public function serialize() {} public function unserialize($string) {} } $rfc = new ReflectionClass("Test"); var_dump($rfc->implementsInterface("Serializable")); var_dump(serialize(new Test));
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Deprecated: Test implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /in/18Am5 on line 2 bool(true) Fatal error: Uncaught Exception: Serialization of 'Test' is not allowed in /in/18Am5:11 Stack trace: #0 /in/18Am5(11): serialize(Object(Test)) #1 {main} thrown in /in/18Am5 on line 11
Process exited with code 255.
Output for 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 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Class Test could not implement interface Serializable in Unknown on line 0
Process exited with code 255.
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.17
bool(true) string(2) "N;"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.1
Fatal error: Class 'SplFileInfo' not found in /in/18Am5 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/18Am5 on line 2
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, expecting '{' in /in/18Am5 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/18Am5 on line 2
Process exited with code 255.

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