Online PHP editor | output for kXSoS

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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: AAAAaah!!
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/kXSoS on line 11
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.2: Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/kXSoS on line 11 
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/kXSoS on line 11 
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/kXSoS on line 5 
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: Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/kXSoS on line 5 
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/kXSoS on line 5 
Process exited with code 255.