Question

我正在尝试创建一个网站，并且通过我的“创建新学生”＃39;页面我试图使用从phpmyadmin生成的一些MySQL代码，当我插入一个新的测试行。但是，当我执行此代码时，它不会将其插入我的数据库。

connection.php

<?php

define("DB_SERVER", "localhost");
define("DB_USER", "root");
define("DB_PASS", "root");
define("DB_NAME", "spelling");

$connection = new mysqli(DB_SERVER,DB_USER,DB_PASS,DB_NAME);

if (mysqli_connect_errno()) {
    exit("Database connection failed: " . mysqli_connect_error());};
?>

addstudent.php

<?php session_start();
require_once("connection.php");
?>
<!DOCTYPE html>
<html>
<head>
    <title>
    Add a student
    </title>
</head>
<body>
<form action="addstudent.php" method="post">
        Full Name:
        <input type="text" name="fullname" autocomplete="off">
        <br />
        Username: 
        <input type="text" name="username" autocomplete="off">
        <br />
        Password:  
        <input type="password" name="password" autocomplete="off">
        <br />
        <br />
        <input type="submit" value="Add Student" name="submit">
        </form>
<?php

if(isset($_POST["submit"]) ){
    $_POST = array_map("strip_tags",$_POST);
    $_POST = array_map("trim",$_POST);

    $fullname = $_POST["fullname"];
    $username = $_POST["username"];
    $password = $_POST["password"];

    $query = "INSERT INTO `spelling`.`students` (`SID`, `fullname`, `CID`, `username`, `password`) VALUES (NULL, '".$fullname."', '1', '".$username."', '".$password."')";
    }
?>
</body>
</html>

Answer 1

您忘了运行查询：

$query = "INSERT INTO `spelling`.`students` (`SID`, `fullname`, `CID`, `username`, `password`) VALUES (NULL, '".$fullname."', '1', '".$username."', '".$password."')";
$result = mysqli_query($connection, $query);

或同时检查错误。

$result = mysqli_query($connection, $query) or die(mysqli_error($connection));

同时删除

中的迷路;

exit("Database connection failed: " . mysqli_connect_error());}; // <=

将其更改为

if (mysqli_connect_errno()) {
    exit("Database connection failed: " . mysqli_connect_error());
    }

PHP mysql代码没有执行

1 个答案: