使用php在数组中附加json文件

Question

i have json file with array and i want to add array elemnts to that array using php . please advice me to proceed.

here is my existing json file

data.json

{
"12":{"userId":"1","username":"Ss","password":"33"},
"32":{"userId":"1","username":"Ss","password":"33"}
}

my php file

below is my code part which i need to append with my existing json file.

$data[$thisId] = array( 
    'userId'=> $userId, 
    'username'=> $username,
        'password'=> $password, 
          ); 
$json = json_encode($data); 

how can i add this to my json file ? pls advice

: I want to write the data which come from php file into my existing json file

Answer 1

You have to decode your file to append your datas :

$data = json_decode('data.json', true);
$data[$thisId] = array( 
    'userId'=> $userId, 
    'username'=> $username,
        'password'=> $password, 
          ); 
$json = json_encode($data);
file_put_contents('data.json', $json);