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<?php $formatter = new IntlDateFormatter( 'en_US', IntlDateFormatter::FULL, IntlDateFormatter::FULL, 'Europe/London', IntlDateFormatter::GREGORIAN, "Y" ); echo $formatter->format( new DateTime('2017-12-31 12:00:00', new DateTimeZone('Europe/London')) );
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
2018
Output for 8.0.13
Fatal error: Uncaught Error: Class "IntlDateFormatter" not found in /in/mIUue:3 Stack trace: #0 {main} thrown in /in/mIUue on line 3
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33
Fatal error: Uncaught Error: Class 'IntlDateFormatter' not found in /in/mIUue:3 Stack trace: #0 {main} thrown in /in/mIUue on line 3
Process exited with code 255.

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