array(3) {
[0]=>
array(2) {
[0]=>
array(2) {
["firstname"]=>
string(3) "Bob"
["lastname"]=>
string(6) "Tomato"
}
[1]=>
array(2) {
["firstname"]=>
string(5) "Larry"
["lastname"]=>
string(8) "Cucumber"
}
}
[1]=>
string(9) "firstname"
[2]=>
string(8) "lastname"
}
Warning: array_column() expects at most 3 parameters, 4 given in /in/lJS3S on line 16
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
array(3) {
[0]=>
array(2) {
[0]=>
array(2) {
["firstname"]=>
string(3) "Bob"
["lastname"]=>
string(6) "Tomato"
}
[1]=>
array(2) {
["firstname"]=>
string(5) "Larry"
["lastname"]=>
string(8) "Cucumber"
}
}
[1]=>
string(9) "firstname"
[2]=>
string(8) "lastname"
}
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'array_column' not found or invalid function name in /in/lJS3S on line 16