Online PHP editor | output for hLfbR

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.23, 8.4.1 - 8.4.10: Fatal error: Declaration of WalkerOkayExtraOptionalParams::unset_children(&$element, &$children_elements) must be compatible with Walker::unset_children($element, &$children_elements) in /in/hLfbR on line 8
Process exited with code 255.
Output for 7.4.0 - 7.4.33: Warning: Declaration of WalkerOkayExtraOptionalParams::unset_children(&$element, &$children_elements) should be compatible with Walker::unset_children($element, &$children_elements) in /in/hLfbR on line 8
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33: Warning: Declaration of WalkerOkayExtraOptionalParams::unset_children(&$element, &$children_elements) should be compatible with Walker::unset_children($element, &$children_elements) in /in/hLfbR on line 9
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: Strict Standards: Declaration of WalkerOkayExtraOptionalParams::unset_children() should be compatible with Walker::unset_children($element, &$children_elements) in /in/hLfbR on line 9
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Strict Standards: Declaration of WalkerOkayExtraOptionalParams::unset_children() should be compatible with that of Walker::unset_children() in /in/hLfbR on line 9
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/hLfbR on line 4
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/hLfbR on line 4
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/hLfbR on line 4
Process exited with code 255.