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<?php class baseApplicationClass {} class myApplicationClass extends baseApplicationClass {} class myInstanceClass extends myApplicationClass {} $myInstanceClass = new myInstanceClass; while ($parentClass = get_parent_class($parentClass) !== false); echo $parentClass;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $parentClass in /in/AT04m on line 9 Fatal error: Uncaught TypeError: get_parent_class(): Argument #1 ($object_or_class) must be an object or a valid class name, null given in /in/AT04m:9 Stack trace: #0 /in/AT04m(9): get_parent_class(NULL) #1 {main} thrown in /in/AT04m on line 9
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 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: parentClass in /in/AT04m on line 9
Output for 7.3.32 - 7.3.33

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