Question

我是编码的初学者，想要在html中创建一个与MySQL连接的表单。之后，我希望能够自动填写表格。我的意思是，例如，如果我输入代码，我希望用户名和连接到MySQL代码的密码自动填写表单。我的HTML代码和PHP代码在单独的文件中。现在我使用：

<FORM name="form" method="post" action="code.php">

将php文件与html文件连接。我使用提交按钮将数据发送到MySQL。我已经考虑过一个按钮来填充数据，但尚未对其进行测试。我还想出了如何从MySQL获取数据：

<?php

//init
$server = 'localhost';
$user = 'root';
$db = 'database';

$con = mysqli_connect($server, $user);

if(!$con) {
    die('Could not connect: ' . mysqli_error());
}

mysqli_select_db($con, $db);

$query = "SELECT * FROM TEST";
$retval = mysqli_query($con, $query);

if(!retval) {
    echo ' Error: Data input failed!' . mysqli_error($con);
}

while($row = mysqli_fetch_array($retval, MYSQLI_ASSOC)) {
    echo "User : {$row['Username']}  <br> ".
         "Code : {$row['Code']} <br> ".
         "Password : {$row['Password']} <br> ";
}

mysqli_close($con);
?>

但是，我不知道如何将获取的数据连接到html表单。如果您有任何想法，请随时与我分享。

--- CODE.PHP ---
<?php

//init
$server= 'localhost';
$user = 'root';
$db = 'database';

//input 
$username = $_POST['username'];
$code = $_POST['code'];                               
$password = $_POST['password'];

$con = mysqli_connect($server, $user);

if(!$con) {
    echo 'No connection!';
}

if(!mysqli_select_db($con, $db)) {
    echo ' No database!';
}
$query = "INSERT INTO TEST (Username, Code, Password) VALUES ('$username', '$code', '$password')";

if(!mysqli_query($con, $query)) {
    echo ' Error: Data input failed! ' . mysqli_error($con);
} else {
    echo ' Data input successful!';
}
?>

Answer 1

您可以在用于从数据库中获取的while循环中回显表单及其变量

修改

<?php .... while($row = mysqli_fetch_array($retval, MYSQLI_ASSOC)) { //echo "User : {$row['Username']} <br> ". //"Code : {$row['Code']} <br> ". //"Password : {$row['Password']} <br> "; //Probably better this way $name = $row['Username']; $code = $row['code']; $password = $row['password']; echo '<form action="" method="post"> <input type="text" name="yourname" value="'.$name.'"<br> <input type="text" name="yourname" value="'.$code.'"<br> <input type="text" name="yourname" value="'.$password.'"<br> </form>'; } .... ?>

如果您尝试访问其他文件中的每个变量，请将其存储在表单文件中的$_SESSION和session_start()中。这取决于您的网站工作流程。

<?php .... while($row = mysqli_fetch_array($retval, MYSQLI_ASSOC)) { //echo "User : {$row['Username']} <br> ". //"Code : {$row['Code']} <br> ". //"Password : {$row['Password']} <br> "; //Probably better this way $name = $row['Username']; $code = $row['code']; $password = $row['password']; $_SESSION['password'] = $password; $_SESSION['code'] = $code; $_SESSION['Username'] = $Username; } .... ?>

您的表单文件

<?php //Start session at the top of page session_start(); $password = $_SESSION['password']; $code = $_SESSION['code']; $Username = $_SESSION['Username']; echo '<form action="" method="post"> <input type="text" name="yourname" value="'.$Username.'"<br> <input type="text" name="yourname" value="'.$code.'"<br> <input type="text" name="yourname" value="'.$password.'"<br> </form>'; ?>

如何使用PHP和MySQL自动填充HTML表单？

1 个答案: