<?php
$array = [
[
"FNAME" => "nullable|string",
],
[
"LNAME" => "nullable|string",
]
];
$newArray = [];
foreach ($array as $item) {
foreach ($item as $key => $value) {
$newArray[$key] = $value;
}
}
print_r($newArray);
Будет выводить:
Array
(
[FNAME] => nullable|string
[LNAME] => nullable|string
)