嗨，我是 php 新手，我目前正在按照有关如何制作库存管理系统的教程进行操作，但我仍在登录屏幕上。因为我是PHP的新手，所以我对它了解不多。我希望有专家可以帮助我解决这个问题。这是代码
<?php
require_once 'php-action/db_connect.php';
session_start();
$errors = array();
if($_POST) {
$username = $_POST['username'];
$password = $_POST['password'];
if(empty($usernmame) || empty($password)){
if($username == ""){
$error[] = "Username is required";
}
if($password = ""){
$error[] = "Password is required";
}
}else {
$sql = "SELECT * FROM users WHERE username = '$username'";
$result = $connect->query($sql);
if($result->num_rows == 1){
$password = md5($password)
$errors[] = "Username does not exist";
// exits
$mainsql = "SELECT * FROM users WHERE username = '$username' AND
password ='$password";
$mainResult = $connect->query($mainSql);
if($mainResult->num_rows == 1){
$value = $mainResult->fetch_assoc();
$user_id = $value['user_id'];
//set session
$_SESSION['user_id'] = $user_id;
header('location:http://localhost/test/stock_system/dashboard.php');
} else{
$errors[] = "incorrect username/password combination";
}
}else{
$errors[] = "Username does not exist";
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
</head>
<title>SGU Stock Management System</title>
<!-- bootstrap -->
<link rel="stylesheet" type="text/css"
href="assets/bootstrap/css/bootstrap.min.css">
<!-- bootstrap theme -->
<link rel="stylesheet" type="text/css" href="assets/bootstrap/css/bootstrap-theme.min.css">
<!-- font awesome css -->
<link rel="stylesheet" type="text/css" href="assets/font-awesome/web-fonts-with-css/css/fontawesome.min.css">
<!-- custom css -->
<link rel="stylesheet" type="text/css" href="custom/css/custom.css">
<!-- jquery -->
<script type="text/javasript" src="assets/jquery/jquery.min.js"></script>
<!-- jqueryui -->
<link rel="stylesheet" type="text/css" href="assets/jquery-ui/jquery.min.css">
<script type="text/javasript" src="assets/jquery-ui/jquery-ui.min.js">
</script>
<!-- bootstrap js -->
<script type="text/javasript" src="assets/bootstrap/js/bootstrap.min.js"></script>
<body>
<div class="container">
<div class="row vertical">
<div class="col-md-5 col-md-offset-4">
<div class="alert alert-primary" role="alert">
<h3 class="card-title">Please Sign In</h3>
</div>
<div class="messages">
<?php if($errors) {
foreach ($errors as $key -> $value){
echo'<div class="alert alert-warning" role="alert">
<i class="glyphicon glyphicon-exclamation-sign"></i>
'.$value.'</div>';
}
}?>
</div>
<div class="card">
<div class="card-body">
<form class="form-horizontal" action="<?php echo $_SERVER['PHP_SELF']
?>" method="" id="loginform">
<div class="form-group">
<label for="username">Username</label>
<input type="email" class="form-control" id="username"
name="username" placeholder="Enter username">
<small id="emailHelp" class="form-text text-muted">We'll never share your username with anyone else.</small>
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" placeholder="password">
</div>
<div class="form-check">
<input type="checkbox" class="form-check-input" id="exampleCheck1">
<label class="form-check-label" for="exampleCheck1">Check me
out</label>
</div>
<button type="submit" class="btn btn-primary">Sign In</button>
</form>
</div>
</div>
</body>
</html>
错误就在这一行
$errors[] = "Username does not exist";
任何帮助，如果脚本有点混乱，请道歉顺便说一下，我正在使用php 5谢谢
这是一个语法错误。您错过了一个分号。
$password = md5($password) <--- You missed a semicolon here
$errors[] = "Username does not exist";