[英]How to correct my index.php error?
這是我的代碼,我正在嘗試,如果我輸入我的電子郵件並通過保存在數據庫(MySQL)中的位置,將顯示出如果我輸入正確,則表明我以該電子郵件身份登錄。 因此,我想您可以為我解決編碼方面的錯誤提供幫助,但是我是Web編程的新手,因此,如果您教我最容易理解和最簡單的方法,我將非常高興。
<?php
$servername = "localhost";
$username = "root";
$password = "crazyjaguar";
$db = "getstarted";
// Create connection
$conn = mysqli_connect($servername, $username, $password);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "Connected successfully";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
// error_reporting(0);
if ($_POST['email'] && $_POST['pwd']) {
// escape
$email = mysqli_real_escape_string($conn, $_POST['email']);
$password = mysqli_real_escape_string($conn, $_POST['pwd']);
// sql email and pass
$sql = "SELECT email, password FROM gs_users";
// query esql & espl
$result = mysqli_query($conn, $sql);
// fetch_array
$row = mysqli_fetch_array($result,MYSQLI_BOTH);
if ($row['email'] != $email) {
die ("No $email registered yet!");
}
if ($row['password'] = $password) {
die ("Wrong $pmail!");
}
echo "You're logged in as $email";
mysqli_close($conn);
}
}
?>
<body>
<h1>Log In</h1>
<form action='' method='post'>
<input type='email' name='email' placeholder='Email'>
<input type='password' name='pwd' placeholder='Password'><br />
<a href='forgot.php'>Forgost Password?</a><br />
<input type='submit' name='signup' value='Signup Here!'><br />
<input type='submit' name='login' value='LogIn'>
</form>
</body>
mysqli_connect函數實際上可以采用4個參數。 最后一個是數據庫名稱。
語法將是
mysqli_connect(host,username,password,dbname);
盡管數據庫名稱是可選的,即使您不提供默認數據庫也將使用。
但是,您再次指定了
$db = "getstarted";
證明您錯過了包括數據庫名稱:)
然后可以使用mysqli_select_db()
選擇要查詢的數據庫。
最后,我將要求您使用PDO 。
在這里,我假設您要首先檢查電子郵件,如果不存在則死於消息“尚未注冊電子郵件”;如果存在,則檢查輸入密碼,如果密碼匹配,則登錄。
請使用以下代碼更改您的代碼。
<?php
$servername = "localhost";
$username = "root";
$password = "crazyjaguar";
$db = "getstarted";
// Create connection
$conn = mysqli_connect($servername, $username, $password, $db);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "Connected successfully";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
// error_reporting(0);
if ($_POST['email'] && $_POST['pwd']) {
// escape
$email = mysqli_real_escape_string($conn, $_POST['email']);
$password = mysqli_real_escape_string($conn, $_POST['pwd']);
// sql email and pass
$sql = "SELECT email, password FROM gs_users where email = $email";
// query esql & espl
$result = mysqli_query($conn, $sql);
if (mysqli_num_rows($result) > 0)
{
$row = mysqli_fetch_array($result,MYSQLI_BOTH);
if ($row['password'] == $password)
{
echo "You're logged in as $email";
}
else
{
die ("Invalid password!");
}
}
else
{
die ("No $email registered yet!");
}
}
}
mysqli_close($conn);
?>
<body>
<h1>Log In</h1>
<form action='' method='post'>
<input type='email' name='email' placeholder='Email'>
<input type='password' name='pwd' placeholder='Password'><br />
<a href='forgot.php'>Forgost Password?</a><br />
<input type='submit' name='signup' value='Signup Here!'><br />
<input type='submit' name='login' value='LogIn'>
</form>
</body>
希望這會幫助你。
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