Online PHP editor | output for gFrDj

Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6: bool(false) array(7) { [0]=> bool(false) [1]=> bool(false) [2]=> bool(false) [3]=> bool(true) ["a"]=> string(2) "aa" [""]=> string(4) "nope" ["bb"]=> string(2) "bb" }
Output for 8.0.0 - 8.0.30: Fatal error: Uncaught Error: Call to undefined function array_is_list() in /in/gFrDj:5 Stack trace: #0 /in/gFrDj(10): f(false, false, false, true, a: 'aa', : 'nope', bb: 'bb') #1 {main} thrown in /in/gFrDj on line 5
Process exited with code 255.
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, 7.4.0 - 7.4.33: Fatal error: Uncaught Error: Cannot unpack array with string keys in /in/gFrDj:10 Stack trace: #0 {main} thrown in /in/gFrDj on line 10
Process exited with code 255.
Output for 5.6.0 - 5.6.40: Parse error: syntax error, unexpected ':', expecting '{' in /in/gFrDj on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38: Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/gFrDj on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/gFrDj on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5: Parse error: parse error, unexpected '.', expecting '&' or T_VARIABLE in /in/gFrDj on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/gFrDj on line 3
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 ')' in /in/gFrDj on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `')'' in /in/gFrDj on line 3
Process exited with code 255.