PHP Json编码语法[关闭]

Question

I'm new to json and decided to use it because it looks promising. How does the syntax work?

Here is my simple php script:

$usernames = array('jake', 'john', 'jackie', 'jared');
$users = array();
for($i = 0; $i < 4; $i++)
{
    $users[$i]['id'] = $i;
    $users[$i]['name'] = $usernames[i];
}
$data = json_encode( $users );
echo $data;

It Outputs:

{"i":{"id":3,"name":null}}

I want it to output:

[{"id": 1,"name": "jake"},{"id": 2,"name": "john"},{"id": 3,"name": "jackie"},{"id": 4,"name": "jared"}]

Answer 1

Just one line inside the loop will do it

$usernames = array('jake', 'john', 'jackie', 'jared');
$users = array();
for($i = 0; $i < 4; $i++)
{
    $users[] = array("id"=>$i+1,"name"=>$usernames[$i]);

}
$data = json_encode( $users );
echo $data;

Output as you wanted in your question

[{"id":1,"name":"jake"},{"id":2,"name":"john"},{"id":3,"name":"jackie"},{"id":4,"name":"jared"}]