当我登录会话时只读取 php 中的一个字符

Question

将变量分配给 $_SESSion。当我回显那个会话时，它显示了一个字符的例子$name="abcd"; 这个回声结果是 abcd。$_SESSION['abcd'] = $name; 此回声结果仅为“a”字符 <?phpinclude("dbConnect.php");if (isset($_POST['username'])) {    $name = $_POST['username'];    $_SESSION = $name;}if (isset($_POST['password'])) {    $password = $_POST['password'];    $_SESSION = $password;}try {     $conn = connect();     $sql="SELECT id,employee_name,email,phone,password,image,created_on FROM handel WHERE employee_name = '$name' AND password = '$password' ";    $result=mysqli_query($conn,$sql);    close($conn);} catch (Exception $e) {     //echo $e->errorMessage();     close($conn);    errorPage();}    // Associative array    $data = mysqli_fetch_array($result,MYSQLI_ASSOC);    print_r($data);    echo $operatorId = $data['id'];    echo $_SESSION['employee_name'] = $data['employee_name'];    $_SESSION['email'] = $data['email'];    $_SESSION['phone'] = $data['phone'];    $_SESSION['password']=$data['password'];    $_SESSION['image']=$data['image'];    $_SESSION['created_on']=$data['created_on']; ?>$name="abcd"; 这个回声结果是 abcd。$_SESSION['abcd'] = $name; 这个回声结果也显示'abcd'