解析错误：语法错误，意外＆＃39;回声＆＃39; （T_ECHO）在第12行的C：\ ...中

Question

我环顾四周无法找到有助于我的答案，也无法看到任何明显的问题。我收到了这个错误：

  

解析错误：语法错误，意外＆＃39;回声＆＃39; （T_ECHO）在C：......上   第12行

<?php

include 'dbh.php';

$uid = $_POST['uid'];
$pwd = $_POST['pwd'];

$sql = "SELECT * FROM user WHERE uid='$uid' AND pwd='$pwd'";
$result = mysqli_query($conn, $sql);

if (!$row = mysqli_fetch_assoc($result) {
    echo "Your username or password is incorrect!";
} else {
    echo "You are logged in!";
}

感谢任何帮助！

Answer 1

您在if()声明中错过了一个paren：

<?php

include 'dbh.php';

$uid = $_POST['uid'];
$pwd = $_POST['pwd'];

$sql = "SELECT * FROM user WHERE uid='$uid' AND pwd='$pwd'";
$result = mysqli_query($conn, $sql);

if (!$row = mysqli_fetch_assoc($result)) {
    echo "Your username or password is incorrect!";
} else {
    echo "You are logged in!";
}