在注册表页面中插入用户名时，它在phpmyadmin数据库中变为零

Posted 2023-01-24

我正在使用000webhost到我的android登录/注册应用程序，当输入数据时，所有列都填入数据库，除了用户名，它变成零，它没有给出任何错误

username turns into zero

Structure

Register.php

<?php

    $name = $_POST["name"];
    $age = $_POST["age"];
    $username = $_POST["username"];
    $password = $_POST["password"];

    $statement = mysqli_prepare($con, "INSERT INTO user (name, username, age, password) VALUES (?, ?, ?, ?)");
    mysqli_stmt_bind_param($statement, "siss", $name, $username, $age, $password);
    mysqli_stmt_execute($statement);

    $response = array();
    $response["success"] = true;  

    echo json_encode($response);
?>

---

的login.php

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

    $statement = mysqli_prepare($con, "SELECT * FROM user WHERE username = ? AND password = ?");
    mysqli_stmt_bind_param($statement, "ss", $username, $password);
    mysqli_stmt_execute($statement);

    mysqli_stmt_store_result($statement);
    mysqli_stmt_bind_result($statement, $userID, $name, $age, $username, $password);

    $response = array();
    $response["success"] = false;  

    while(mysqli_stmt_fetch($statement))
        $response["success"] = true;  
        $response["name"] = $name;
        $response["age"] = $age;
        $response["username"] = $username;
        $response["password"] = $password;
    

    echo json_encode($response);
?>

答案

在你对bind param的调用中，你将用户名定义为整数（i）......

mysqli_stmt_bind_param($statement, "siss", $name, $username, $age, $password);

这应该是一个s，将其保留为字符串，年龄可能是整数。

mysqli_stmt_bind_param($statement, "ssis", $name, $username, $age, $password);