我将 Unity 表单与 PHP 结合使用，将数据发送到数据库，我可以成功输入信息并将其发送到数据库，但问题是如果字段为空，它也会发送数据。
我正尝试使用 isset 方法来防止这种情况，但它似乎不起作用。有人可以帮我仔细检查一下吗？
数据到达数据库的图片
统一形式的形象
<?php
if(!isset($_POST['usernamePost'], $_POST['passwordPost'], $_POST['emailPost']))
{
echo "This is not working";
}
else
{
//Enter the data into the database
$username = filter_var($_POST['usernamePost'], FILTER_SANITIZE_STRING);
$password = filter_var($_POST['passwordPost'], FILTER_SANITIZE_STRING);
$email = filter_var($_POST['emailPost'], FILTER_SANITIZE_STRING);
//variable for connection
$servername = "localhost";
$server_username = "root";
$server_password = "";
$dbName = "ontrigger_game";
try
{
//connection to the database
$dbhandle = mysqli_connect($servername, $server_username, $server_password)
or die("Unable to connect to MySQL");
echo "Connected to MySQL<br>";
//select a database to work with
$selected = mysqli_select_db($dbhandle, $dbName)
or die("Could not select database");
$sql = "INSERT INTO users (username, password, email)
VALUES ('".$username."','".$password."','".$email."')";
if(!mysqli_query($dbhandle, $sql))
{
die('Error: ' . mysqli_error());
}
echo "1 record added";
//close the connection
mysqli_close($dbhandle);
}
catch (Exception $ex)
{
}
}
?>
最佳答案
您还应该使用 empty() 方法检查它是否为空
if (!isset($_POST['usernamePost']) && empty($_POST['usernamePost'] )) {
// error message here
} else {
// What you want to do if not empty and is set.
}
注意:使用&& 运算符而不是逗号
关于PHP向数据库发送空白信息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46075909/