在'foreach'循环中获取数组键

$array = array('a' => 'apple', 'b' => 'banana', 'c' => 'cherry');

foreach ($array as $key => $value) {
    echo $key . ': ' . $value . '<br>';
}

const obj = {a: 'apple', b: 'banana', c: 'cherry'};

for (const key in obj) {
    console.log(key + ': ' + obj[key]);
}

array = ['apple', 'banana', 'cherry']

for key, value in enumerate(array):
    print(key, ':', value)