如何在php数组中添加附加信息

$data = array(
    'name' => 'John',
    'age' => 25
);

$data['email'] = 'john@example.com'; // 添加附加信息

print_r($data);

Array
(
    [name] => John
    [age] => 25
    [email] => john@example.com
)

$data = array('apple', 'banana', 'orange');

array_push($data, 'grape'); // 添加附加信息

print_r($data);

Array
(
    [0] => apple
    [1] => banana
    [2] => orange
    [3] => grape
)

$data = array('apple', 'banana', 'orange');

$data[] = 'grape'; // 添加附加信息

print_r($data);

Array
(
    [0] => apple
    [1] => banana
    [2] => orange
    [3] => grape
)