PHP身份驗證後無法成功寫入MySQL資料庫
我正在嘗試在認證後向資料庫寫入數據，但無法成功。
一旦成功登錄，我會重定向到index.php
#<?php
session_start();
if (isset($_SESSION["user_id"])) {
$mysqli = require __DIR__ . "/database.php";
$sql = "SELECT * FROM user
WHERE id = {$_SESSION["user_id"]}";
$result = $mysqli->query($sql);
$user = $result->fetch_assoc();
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Home</title>
<meta charset="UTF-8">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/water.css@2/out/water.css">
</head>
<body>
<h1>Home</h1>
<?php if (isset($user)): ?>
<p>Hello <?= htmlspecialchars($user["name"]) ?></p>
<form action="user-input.php" method="post" id="availDates">
<label for="nickName">Nickname:</label>
<input id="nickName" name="nickname" />
<label for="startDate">Start Date:</label>
<input type="date" id="startDate" name="startdate">
<button type="submit">Submit</button>
</form>
<p><a href="logout.php">Log out</a></p>
<?php else: ?>
<p><a href="login.php">Log in</a> or <a href="signup.html">sign up</a></p>
<?php endif; ?>
</body>
</html>
從這裡開始，我想捕獲一個名字和一個日期並提交，但每次提交後，我在phpmyadmin中查看，表格單元格都是空白的。我正在使用xampp在本地運行。以下是我嘗試從表單中捕獲輸入的程式碼：
<?php
if (empty($_POST["nickname"])) {
die("Name is required");
}
if (empty($_POST["date"])) {
die("Name is required");
}
$mysqli = require __DIR__ . "/database.php";
$sql = "INSERT INTO user (nickname) VALUES (?)";
$stmt = $mysqli->stmt_init();
if ( ! $stmt->prepare($sql)) {
die("SQL error: " . $mysqli->error);
}
$stmt->bind_param("sss", $_POST["name"]);
if ($stmt->execute()) {
echo "successful";
} else {
if ($mysqli->errno === 1062) {
die("error");
} else {
die($mysqli->error . " " . $mysqli->errno);
}
}
###任何幫助都將不勝感激###