php - 未定义索引 php if ($_SERVER ['REQUEST_METHOD' ] == 'POST' ){ 找不到答案？

Question

    <form class="login" action="<?php echo $_SERVER['PHP_SELF'] ?>" method="POST">
    <h4 class="text-center">Admin Login</h4>
    <input class="form-control" type="text" name="user" placeholder="Username" autocomplete="off"/>
    <input class="form-control" type="password" name="pass" placeholder="Password" autocomplete="new-password"/>
    <input class="btn btn-primary btn-block" type="submit"  value="Login">
  </form>

我在php上制作了method="POST"表单

if ($_SERVER['REQUEST_METHOD'] == 'POST' ){

  $username =   $_POST['user'];
  $pass =       $_POST['pass'];
  $hashPass =   sha1($pass);

  $stmt = $con->prepare("SELECT Username,Password FROM users WHERE Username = ? AND Password = ?");
  $stmt->execute(array($username,$hashPass));
  $count =$stmt->rowCount();

  echo $count;

但结果

Notice: Undefined index: user in C:\xampp\htdocs\eCommerc\admin\index.php on line 7

Notice: Undefined index: pass in C:\xampp\htdocs\eCommerc\admin\index.php on line 8

Answer 1

这个问题是因为Windows操作系统没有启用某些PHP

确保使用 phpinfo() 函数不会找到 REQUEST_METHOD 的方法

所以更换操作系统或者尝试使用其他方法