- Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- Warning: serialize(): SleepyHead::__sleep() should return an array only containing the names of instance-variables to serialize in /in/H96m9 on line 14 NULL
- Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
- Notice: serialize(): __sleep should return an array only containing the names of instance-variables to serialize in /in/H96m9 on line 14 NULL
- Output for 7.3.32 - 7.3.33
- NULL