使用PHP将多维Json转换为字符串

<?php
$data = array(
    'name' => 'John',
    'age' => 30,
    'languages' => array('PHP', 'JavaScript', 'Python'),
    'address' => array(
        'street' => '123 Main St',
        'city' => 'New York',
        'country' => 'USA'
    )
);

$jsonString = json_encode($data);

echo $jsonString;
?>

{"name":"John","age":30,"languages":["PHP","JavaScript","Python"],"address":{"street":"123 Main St","city":"New York","country":"USA"}}

$jsonString = json_encode($data, JSON_PRETTY_PRINT);