Online PHP editor | output for 67BNK

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/67BNK on line 4 string(5) "true:" bool(true) string(14) "I AM REDEFINED" string(6) "false:" bool(false) string(14) "I AM REDEFINED" string(5) "null:" NULL string(14) "I AM REDEFINED"
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: Deprecated: define(): Declaration of case-insensitive constants is deprecated in /in/67BNK on line 4 string(5) "true:" bool(true) string(14) "I AM REDEFINED" string(6) "false:" bool(false) string(14) "I AM REDEFINED" string(5) "null:" NULL string(14) "I AM REDEFINED"
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.32 - 7.3.33: string(5) "true:" bool(true) string(14) "I AM REDEFINED" string(6) "false:" bool(false) string(14) "I AM REDEFINED" string(5) "null:" NULL string(14) "I AM REDEFINED"
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: string(5) "true:" string(14) "I AM REDEFINED" string(14) "I AM REDEFINED" string(6) "false:" string(14) "I AM REDEFINED" string(14) "I AM REDEFINED" string(5) "null:" string(14) "I AM REDEFINED" string(14) "I AM REDEFINED"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_STRING in /in/67BNK on line 2
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 T_STRING in /in/67BNK on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/67BNK on line 2
Process exited with code 255.