Array
(
[a] => b
)
Array
(
[0] => b
)
Fatal error: Uncaught ArgumentCountError: Too few arguments to function keys(), 1 passed and exactly 2 expected in /in/6ljW4:5
Stack trace:
#0 [internal function]: keys('b')
#1 /in/6ljW4(9): array_map('keys', Array)
#2 {main}
thrown in /in/6ljW4 on line 5
Process exited with code 255.
Array
(
[a] => b
)
Array
(
[0] => b
)
Warning: Missing argument 2 for keys() in /in/6ljW4 on line 5
Notice: Undefined variable: k in /in/6ljW4 on line 5
Array
(
[0] => b
)