在PHP中操作数组键的最佳方法

$array = [
    "apple" => "fruit",
    "carrot" => "vegetable",
    "chicken" => "meat"
];

$keys = array_keys($array);

print_r($keys);

Array
(
    [0] => apple
    [1] => carrot
    [2] => chicken
)

foreach ($array as $key => $value) {
    echo "Key: " . $key . ", Value: " . $value . "\n";
}

Key: apple, Value: fruit
Key: carrot, Value: vegetable
Key: chicken, Value: meat