我有一个代码,我想在每个页面上运行,但它似乎并不工作。如何将MySQL命令添加到每个页面
<?php
include 'db.php';
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "User";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "UPDATE users SET login_time=NOW() WHERE id='$id'";
if ($conn->query($sql) === TRUE) {
echo "Record updated successfully";
} else {
echo "Error updating record: " . $conn->error;
}
$conn->close();
?>
我也曾尝试线
$sql = "UPDATE users SET login-time='NOW()' WHERE id='$id'";
它回来说Record updated successfully
但不acctually更新。
谢谢
db.php中有什么? –
'var_dump($ id);'输出是什么? – Mike
这是我存储用户信息的数据,比如id变量。该命令应该可行,但事实并非如此。 –