3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo serialize([new DateTimeZone('Europe/Amsterdam')]);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
a:1:{i:0;O:12:"DateTimeZone":2:{s:13:"timezone_type";i:3;s:8:"timezone";s:16:"Europe/Amsterdam";}}
Output for 5.4.0 - 5.4.45
a:1:{i:0;O:12:"DateTimeZone":0:{}}
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/UD8LU on line 3
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/UD8LU on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/UD8LU on line 3
Process exited with code 255.

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