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<?php class A { public static $data = ['a']; public static function getData() { $classes = class_parents($class); $classes[] = get_called_class(); return call_user_func_array('array_merge', array_map( function($class) { return $class::$data; }, $classes ) ); } } class B extends A { public static $data = ['b']; } class C extends B { public static $data = ['c']; } class D extends C { public static $data = ['d']; } var_dump(A::getData()); var_dump(B::getData()); var_dump(C::getData()); var_dump(D::getData());
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: Undefined variable $class in /in/9gfps on line 9 Fatal error: Uncaught TypeError: class_parents(): Argument #1 ($object_or_class) must be of type object|string, null given in /in/9gfps:9 Stack trace: #0 /in/9gfps(9): class_parents(NULL) #1 /in/9gfps(37): A::getData() #2 {main} thrown in /in/9gfps on line 9
Process exited with code 255.
Output for 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: class in /in/9gfps on line 9 Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "a" } Notice: Undefined variable: class in /in/9gfps on line 9 Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "b" } Notice: Undefined variable: class in /in/9gfps on line 9 Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "c" } Notice: Undefined variable: class in /in/9gfps on line 9 Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "d" }
Output for 7.3.32 - 7.3.33
Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "a" } Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "b" } Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "c" } Warning: class_parents(): object or string expected in /in/9gfps on line 9 array(1) { [0]=> string(1) "d" }
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/9gfps on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/9gfps on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/9gfps on line 5
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/9gfps on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/9gfps on line 5
Process exited with code 255.
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