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<?php var_dump(@unserialize('O:8:"DateTime":0}'));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.23, 5.4.0 - 5.4.13, 8.2.2 - 8.2.18, 8.3.0 - 8.3.7
bool(false)
Output for 8.2.0 - 8.2.1
Fatal error: Uncaught Error: Invalid serialization data for DateTime object in /in/U1sNE:2 Stack trace: #0 [internal function]: DateTime->__unserialize(Array) #1 /in/U1sNE(2): unserialize('O:8:"DateTime":...') #2 {main} thrown in /in/U1sNE on line 2
Process exited with code 255.
Output for 7.1.0 - 7.1.25, 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
Fatal error: Uncaught Error: Invalid serialization data for DateTime object in /in/U1sNE:2 Stack trace: #0 [internal function]: DateTime->__wakeup() #1 /in/U1sNE(2): unserialize('O:8:"DateTime":...') #2 {main} thrown in /in/U1sNE on line 2
Process exited with code 255.
Output for 5.3.24 - 5.3.29, 5.4.14 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20

Process exited with code 255.

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