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<?php $a = 'O:12:"DateTimeZone":0:{}'; echo unserialize($a);
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Invalid serialization data for DateTimeZone object in /in/WZT0m:3 Stack trace: #0 [internal function]: DateTimeZone->__unserialize(Array) #1 /in/WZT0m(3): unserialize('O:12:"DateTimeZ...') #2 {main} thrown in /in/WZT0m on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27
Fatal error: Uncaught Error: Timezone initialization failed in /in/WZT0m:3 Stack trace: #0 [internal function]: DateTimeZone->__wakeup() #1 /in/WZT0m(3): unserialize('O:12:"DateTimeZ...') #2 {main} thrown in /in/WZT0m on line 3
Process exited with code 255.

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