我的php表单在我的表中插入了几列和一个加密的密码。但是,当我运行它时,它表示变量数与参数数量不匹配。这是我的代码:
<?php
if (isset($_POST['insert'])) {
require_once 'login.php';
$OK = false;
$conn = new mysqli ($host, $user, $password, $database) or die("Connection Failed");
$stmt = $conn->stmt_init();
$sql = 'INSERT INTO users (user_email, user_name, user_pref, user_password)
VALUES(?, ?, ?, des_encrypt(substring(md5(rand()),1,8)))';
if ($stmt->prepare($sql)) {
// bind parameters and execute statement
$stmt->bind_param('ssss', $_POST['user_email'], $_POST['user_name'], $_POST['user_pref'], $_POST['user_password']);
// execute and get number of affected rows
$stmt->execute();
if ($stmt->affected_rows > 0) {
$OK = true;
}
}
if ($OK) {
header('Location: confirm.php');
exit;
} else {
$error = $stmt->error;
}
}
?>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Add User</title>
</head>
<body>
<h1>Add User</h1>
<?php if (isset($error)) {
echo "<p>Error: $error</p>";
} ?>
<form id="form1" method="post" action="">
<p>
<label for="user_email">User email:</label>
<input name="user_email" type="text" class="widebox" id="user_email">
</p>
<p>
<label for="user_name">User name:</label>
<input name="user_name" type="text" class="widebox" id="user_name">
</p>
<p>
User role: <select name = "user_pref">
<option value = "BLU">Blue</option>
<option value = "YEL">Yellow<option>
<option value = "GRE">GREEN</option>
</select>
</p>
<p>
<input type="submit" name="insert" value="Register New User" id="insert">
</p>
</form>
</body>
</html>
当我在没有ENCRYPTED PASSWORD的情况下测试表单时它工作正常,所以当我试图插入密码时,这一行会引起问题:
$stmt->bind_param('ssss', $_POST['user_email'], $_POST['user_name'], $_POST['user_pref'], $_POST['user_password']);
我是否应该将字符串更改为其他密码?
感谢
答案 0 :(得分:2)
$sql = 'INSERT INTO users (user_email, user_name, user_pref, user_password)
VALUES(?, ?, ?, des_encrypt(substring(md5(rand()),1,8)))';
仅定义3个占位符,但您尝试写入4个占位符。
$stmt->bind_param('ssss', $_POST['user_email'], $_POST['user_name'], $_POST['user_pref'], $_POST['user_password']);
每一个?在准备好的SQL语句中插入时,必须在bind_param中传递一个变量。
答案 1 :(得分:2)
你在这里传递了四个变量:
$stmt->bind_param('ssss', $_POST['user_email'], $_POST['user_name'], $_POST['user_pref'], $_POST['user_password']);
但只需要其中三个
$sql = 'INSERT INTO users (user_email, user_name, user_pref, user_password)
VALUES(?, ?, ?, des_encrypt(substring(md5(rand()),1,8)))';
见“?”标记,它将被替换为bild_params。 您可能希望将SQL查询替换为下一个:
$sql = 'INSERT INTO users (user_email, user_name, user_pref, user_password)
VALUES(?, ?, ?, des_encrypt(substring(md5(?),1,8)))';
答案 2 :(得分:1)
查询所采用的参数数量取决于查询中?
的数量。
您的查询中有3个?
:
$sql = 'INSERT INTO users (user_email, user_name, user_pref, user_password)
VALUES(?, ?, ?, des_encrypt(substring(md5(rand()),1,8)))';
并且您在bind_param
中传递了5个参数:
$stmt->bind_param($_POST['user_email'], $_POST['user_name'], $_POST['user_pref']);
有两种可能的解决方案:
在查询中选择5个参数:
$sql = 'INSERT INTO users (user_email, user_name, user_pref, user_password)
VALUES(?, ?, ?, ?, des_encrypt(?))';
在bind_param
函数中仅传递3个参数:
$stmt->bind_param('ssss', $_POST['user_email'], $_POST['user_name'], $_POST['user_pref'], $_POST['user_password']);