Разбор данных запроса (mysqli_fetch_assoc)

<?php
 
 
// Verify if user exists for login
if(isset($_GET['email']) && isset($_GET['psw'])){
 
$email = $_GET['email'];
$psw = $_GET['psw'];
 
 
// Connection's Parameters
$db_host="localhost";
$db_name="todoregbase";
$username="root";
$password="";
 
$link=mysqli_connect($db_host,$username,$password) or die ("cannot connect");
 
 
 
mysqli_select_db($link,$db_name) or die ("cannot select DB");
 
 
$sql = 'SELECT * FROM USERS WHERE email="'. $email . '" AND psw = "' . $psw . '"';
$result  = mysqli_query($link, $sql);
$getUser_result =  mysqli_fetch_assoc($result);
$getUser_RecordCount = mysqli_num_rows($result);
 
if($getUser_RecordCount < 1){
    echo '0';
} else {
    $obj = array('id' => $getUser_result['id'], 'fname' => $getUser_result['fname'], 'lname' => $getUser_result['lname']);
    $jsonObj = json_encode(obj, JSON_FORCE_OBJECT);
    echo $jsonObj;
}
}
 
mysqli_close($link);
?>

$link=mysqli_connect($db_host,$username,$password, $db_name) or die ("cannot connect");
//mysqli_select_db($link,$db_name) or die ("cannot select DB");

$sql = "SELECT * FROM USERS WHERE email='". $email . "' AND psw = '" . $psw . "'" or die("ERROR: ".mysqli_error());

$link=mysqli_connect($db_host,$username,$password) or die (mysqli_connect_error());
$sql = 'SELECT * FROM USERS WHERE email="'. $email . '" AND psw = "' . $psw . '"';
$result  = mysqli_query($link, $sql) or die(mysqli_error($link));

// Было (не работает)
$obj = array('id' => $getUser_result['id'], 'fname' => $getUser_result['fname'], 'lname' => $getUser_result['lname']);
// Попробовал так - не работает
$obj = [ 'id' => $getUser_result['id'], 'fname' => $getUser_result['fname'], 'lname' => $getUser_result['lname'] ];

// Было (не работает)
$obj = array('id' => $getUser_result['id'], 'fname' => $getUser_result['fname'], 'lname' => $getUser_result['lname']);
// Попробовал так - не работает
$obj = [ 'id' => $getUser_result['id'], 'fname' => $getUser_result['fname'], 'lname' => $getUser_result['lname'] ];