努力获取PHP中的数组值

Question

目前，我正在尝试确定一个房间的油漆成本，
要获得我一直在尝试使用阵列系统的每个房间的价值，

当前在用户添加房间的页面上，我具有此初始数组代码

$_SESSION['rheight'] = $_POST['height'];
  $_SESSION['rlength'] = $_POST['length'];
  $_SESSION['rwidth'] = $_POST['width'];
  $_SESSION['rwindoor'] = $_POST['windoor'];
  $_SESSION['rname'] = $_POST['name'];
  $_SESSION['rcost'] = $_POST['zoot'];


  $_SESSION['rtotal'] = ($_SESSION['rheight'] + $_SESSION['rlength'] + $_SESSION['rwidth'] + (.75 * $_SESSION['rwindoor'])) * $_SESSION['rcost'];
  $_SESSION['Thic'] = [];

  array_push($_SESSION['room'.count($_SESSION['Thic'])] = [$_SESSION['rname'], $_SESSION['rtotal']];)

然后在输出总成本的页面上，我有

echo $_SESSION['thic'][0]['rname'];

谢谢您的帮助。

Answer 1

在使用session_start()超全局变量之前，您需要调用$_SESSION函数。