Online PHP editor | output for N8Ets

Output for 7.1.20 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5: 39 constants in Foo, Foo extends IntlCalendar 39 constants in IntlGregorianCalendar, IntlGregorianCalendar extends IntlCalendar 39 constants in IntlCalendar
Output for 8.0.13: Fatal error: Uncaught Error: Class "IntlCalendar" not found in /in/N8Ets:3 Stack trace: #0 {main} thrown in /in/N8Ets on line 3
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33: Fatal error: Uncaught Error: Class 'IntlCalendar' not found in /in/N8Ets:3 Stack trace: #0 {main} thrown in /in/N8Ets on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.8: 39 constants in Foo, Foo extends IntlCalendar 0 constants in IntlGregorianCalendar, IntlGregorianCalendar extends IntlCalendar 39 constants in IntlCalendar