在PHP中解析字符串

Question

{"status":"ok","params":{"stream_token":"token=lTQ4sJx9vK7pR7kgeYVDgQ&e=1448284525&u=37997"}}

I would like to parse this string and need

token=lTQ4sJx9vK7pR7kgeYVDgQ&e=1448284525&u=37997

Hows that possible in PHP?

echo json_decode('{"status":"ok","params":{"stream_token":"token=U8h5Ma12SrlizPoFm-Nc5w&e=1448285819&u=37997"}}');

throuse the following error:

Catchable fatal error: Object of class stdClass could not be converted to string

Answer 1

Add the extra parameter to json_decode to retrieve the result as an associative array:

$data = json_decode('{"status":"ok","params":{"stream_token":"token=U8h5Ma12SrlizPoFm-Nc5w&e=1448285819&u=37997"}}', TRUE);
$url= $data['params']['stream_token'];    
var_dump($url); // token=U8h5Ma12SrlizPoFm-Nc5w&e=1448285819&u=37997"

To parse the url variables use parse_str:

parse_str($url, $fragments);
var_dump($fragments);//
/*
array(3) {
  ["token"]=>
  string(22) "U8h5Ma12SrlizPoFm-Nc5w"
  ["e"]=>
  string(10) "1448285819"
  ["u"]=>
  string(5) "37997"
}
*/