在本教程中，我将展示如何使用PHP和MySQL创建登录系统
1.新建数据库
登录phpMyAdmin新建数据库“cpanelusr_database”。
2.建立MySQL表
将以下代码粘贴到SQL中并点击“执行”
SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET AUTOCOMMIT = 0;
START TRANSACTION;
SET time_zone = "+00:00";
--
-- Table structure for table `sc_users`
--
CREATE TABLE `sc_users` (
`user_id` int(11) NOT NULL,
`username` varchar(20) CHARACTER SET utf8 NOT NULL,
`email` varchar(254) CHARACTER SET utf8 NOT NULL,
`password` char(60) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL,
`registration_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
--
-- Indexes for table `sc_users`
--
ALTER TABLE `sc_users`
ADD PRIMARY KEY (`user_id`),
ADD UNIQUE KEY `username` (`username`),
ADD UNIQUE KEY `email` (`email`);
--
-- AUTO_INCREMENT for table `sc_users`
--
ALTER TABLE `sc_users`
MODIFY `user_id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=1;
COMMIT;上面的代码将创建一个’sc_users’的表，该表用来存储用户数据
3.对服务器端逻辑编程
服务端逻辑将由php脚本组成，这些脚本接收并处理来自Unity的Post数据。
第一个脚本是database.php,它将使用php连接到MySQL数据库。
database.php
<?php
host = "localhost"; // Host namedb_username = "DATABASE_USER"; // Mysql username
db_password = "USER_PASSWORD"; // Mysql passworddb_name = "DATABASE_NAME"; // Database name
mysqli_conection = mysqli_connect(host, db_username,db_password, $db_name)or die("cannot connect");
?>记得修改其中的用户名、密码、数据库名对应的值
第二个文件时register.php，该文件将接收来自Unity的发布数据，并将新的用户记录插入数据库表中。
register.php
<?php
if(isset(_POST["email"]) && isset(_POST["username"]) && isset(_POST["password1"]) && isset(_POST["password2"])){
errors = array();emailMaxLength = 254;
usernameMaxLength = 20;usernameMinLength = 3;
passwordMaxLength = 19;passwordMinLength = 5;
email = strtolower(_POST["email"]);
username =_POST["username"];
password1 =_POST["password1"];
password2 =_POST["password2"];
//Validate email
if(preg_match('/\s/', email)){errors[] = "Email can't have spaces";
}else{
if(!validate_email_address(email)){errors[] = "Invalid email";
}else{
if(strlen(email)>emailMaxLength){
errors[] = "Email is too long, must be equal or under". strval(emailMaxLength) . " characters";
}
}
}
//Validate username
if(strlen(username)>usernameMaxLength || strlen(username)<usernameMinLength){
errors[] = "Incorrect username length, must be between". strval(usernameMinLength) . " and " . strval(usernameMaxLength) ."characters";
}else{
if(!ctype_alnum (username)){
errors[] = "Username must be alphanumeric";
}
}
//Validate password
if(password1 != password2){errors[] = "Passwords do not match";
}else{
if(preg_match('/\s/', password1)){errors[] = "Password can't have spaces";
}else{
if(strlen(password1)>passwordMaxLength || strlen(password1)<passwordMinLength){
errors[] = "Incorrect password length, must be between". strval(passwordMinLength) . " and " . strval(passwordMaxLength) ."characters";
}else{
if(!preg_match('/[A-Za-z]/',password1) || !preg_match('/[0-9]/', password1)){errors[] = "Password must contain atleast 1 letter and 1 number";
}
}
}
}
//Check if there is user already registered with the same email or username
if(count(errors) == 0){
//Connect to database
require dirname(__FILE__) . '/database.php';
if (stmt = mysqli_conection->prepare("SELECT username, email FROM sc_users WHERE email = ? OR username = ? LIMIT 1")) {
/* bind parameters for markers */stmt->bind_param('ss', email,username);
/* execute query */
if(stmt->execute()){
/* store result */stmt->store_result();
if(stmt->num_rows>0){
/* bind result variables */stmt->bind_result(username_tmp,email_tmp);
/* fetch value */
stmt->fetch();
if(email_tmp == email){errors[] = "User with this email already exist.";
}
else if(username_tmp ==username){
errors[] = "User with this name already exist.";
}
}
/* close statement */stmt->close();
}else{
errors[] = "Something went wrong, please try again.";
}
}else{errors[] = "Something went wrong, please try again.";
}
}
//Finalize registration
if(count(errors) == 0){hashedPassword = password_hash(password1, PASSWORD_BCRYPT);
if (stmt = mysqli_conection->prepare("INSERT INTO sc_users (username, email, password) VALUES(?, ?, ?)")) {
/* bind parameters for markers */stmt->bind_param('sss', username,email, hashedPassword);
/* execute query */
if(stmt->execute()){
/* close statement */
stmt->close();
}else{errors[] = "Something went wrong, please try again.";
}
}else{
errors[] = "Something went wrong, please try again.";
}
}
if(count(errors) > 0){
echo errors[0];
}else{
echo "Success";
}
}else{
echo "Missing data";
}
function validate_email_address(email) {
return preg_match('/^([a-z0-9!#%&\'*+-\/=?^_`{|}~.]+@[a-z0-9.-]+\.[a-z0-9]+)/i', $email);
}
?>最后一个文件时login.php,它将接收凭据并根据sc_users表对其进行检查
login.php
<?php
if(isset(_POST["email"]) && isset(_POST["password"])){
errors = array();email = _POST["email"];password = _POST["password"];
//Connect to database
require dirname(__FILE__) . '/database.php';
if (stmt = mysqli_conection->prepare("SELECT username, email, password FROM sc_users WHERE email = ? LIMIT 1")) {
/* bind parameters for markers */stmt->bind_param('s', email);
/* execute query */
if(stmt->execute()){
/* store result */
stmt->store_result();
if(stmt->num_rows > 0){
/* bind result variables */
stmt->bind_result(username_tmp, email_tmp,password_hash);
/* fetch value */
stmt->fetch();
if(password_verify (password, password_hash)){
echo "Success" . "|" .username_tmp . "|" . email_tmp;
return;
}else{errors[] = "Wrong email or password.";
}
}else{
errors[] = "Wrong email or password.";
}
/* close statement */stmt->close();
}else{
errors[] = "Something went wrong, please try again.";
}
}else{errors[] = "Something went wrong, please try again.";
}
if(count(errors)>0){
echoerrors[0];
}
}else{
echo "Missing data";
}
?>将以上三个文件上传到您的Web服务器
4.在Unity中编程客户端逻辑
客户端逻辑包含一个C#脚本，该脚本会将数据发布到php脚本中。
在unity中创建脚本并命名为SC_LoginSystem，然后将一下代码粘贴到其中
SC_LoginSystem.cs
using System.Collections;
using UnityEngine;
using UnityEngine.Networking;
public class SC_LoginSystem : MonoBehaviour
{
public enum CurrentWindow { Login, Register }
public CurrentWindow currentWindow = CurrentWindow.Login;
string loginEmail = "";
string loginPassword = "";
string registerEmail = "";
string registerPassword1 = "";
string registerPassword2 = "";
string registerUsername = "";
string errorMessage = "";
bool isWorking = false;
bool registrationCompleted = false;
bool isLoggedIn = false;
//Logged-in user data
string userName = "";
string userEmail = "";
string rootURL = "http://YOUR_SITE.COM/"; //Path where php files are located
void OnGUI()
{
if (!isLoggedIn)
{
if (currentWindow == CurrentWindow.Login)
{
GUI.Window(0, new Rect(Screen.width / 2 - 125, Screen.height / 2 - 115, 250, 230), LoginWindow, "Login");
}
if (currentWindow == CurrentWindow.Register)
{
GUI.Window(0, new Rect(Screen.width / 2 - 125, Screen.height / 2 - 165, 250, 330), RegisterWindow, "Register");
}
}
GUI.Label(new Rect(5, 5, 500, 25), "Status: " + (isLoggedIn ? "Logged-in Username: " + userName + " Email: " + userEmail : "Logged-out"));
if (isLoggedIn)
{
if (GUI.Button(new Rect(5, 30, 100, 25), "Log Out"))
{
isLoggedIn = false;
userName = "";
userEmail = "";
currentWindow = CurrentWindow.Login;
}
}
}
void LoginWindow(int index)
{
if (isWorking)
{
GUI.enabled = false;
}
if (errorMessage != "")
{
GUI.color = Color.red;
GUILayout.Label(errorMessage);
}
if (registrationCompleted)
{
GUI.color = Color.green;
GUILayout.Label("Registration Completed!");
}
GUI.color = Color.white;
GUILayout.Label("Email:");
loginEmail = GUILayout.TextField(loginEmail);
GUILayout.Label("Password:");
loginPassword = GUILayout.PasswordField(loginPassword, '*');
GUILayout.Space(5);
if (GUILayout.Button("Submit", GUILayout.Width(85)))
{
StartCoroutine(LoginEnumerator());
}
GUILayout.FlexibleSpace();
GUILayout.Label("Do not have account?");
if (GUILayout.Button("Register", GUILayout.Width(125)))
{
ResetValues();
currentWindow = CurrentWindow.Register;
}
}
void RegisterWindow(int index)
{
if (isWorking)
{
GUI.enabled = false;
}
if (errorMessage != "")
{
GUI.color = Color.red;
GUILayout.Label(errorMessage);
}
GUI.color = Color.white;
GUILayout.Label("Email:");
registerEmail = GUILayout.TextField(registerEmail, 254);
GUILayout.Label("Username:");
registerUsername = GUILayout.TextField(registerUsername, 20);
GUILayout.Label("Password:");
registerPassword1 = GUILayout.PasswordField(registerPassword1, '*', 19);
GUILayout.Label("Password Again:");
registerPassword2 = GUILayout.PasswordField(registerPassword2, '*', 19);
GUILayout.Space(5);
if (GUILayout.Button("Submit", GUILayout.Width(85)))
{
StartCoroutine(RegisterEnumerator());
}
GUILayout.FlexibleSpace();
GUILayout.Label("Already have an account?");
if (GUILayout.Button("Login", GUILayout.Width(125)))
{
ResetValues();
currentWindow = CurrentWindow.Login;
}
}
IEnumerator RegisterEnumerator()
{
isWorking = true;
registrationCompleted = false;
errorMessage = "";
WWWForm form = new WWWForm();
form.AddField("email", registerEmail);
form.AddField("username", registerUsername);
form.AddField("password1", registerPassword1);
form.AddField("password2", registerPassword2);
using (UnityWebRequest www = UnityWebRequest.Post(rootURL + "register.php", form))
{
yield return www.SendWebRequest();
if (www.isNetworkError)
{
errorMessage = www.error;
}
else
{
string responseText = www.downloadHandler.text;
if (responseText.StartsWith("Success"))
{
ResetValues();
registrationCompleted = true;
currentWindow = CurrentWindow.Login;
}
else
{
errorMessage = responseText;
}
}
}
isWorking = false;
}
IEnumerator LoginEnumerator()
{
isWorking = true;
registrationCompleted = false;
errorMessage = "";
WWWForm form = new WWWForm();
form.AddField("email", loginEmail);
form.AddField("password", loginPassword);
using (UnityWebRequest www = UnityWebRequest.Post(rootURL + "login.php", form))
{
yield return www.SendWebRequest();
if (www.isNetworkError)
{
errorMessage = www.error;
}
else
{
string responseText = www.downloadHandler.text;
if (responseText.StartsWith("Success"))
{
string[] dataChunks = responseText.Split('|');
userName = dataChunks[1];
userEmail = dataChunks[2];
isLoggedIn = true;
ResetValues();
}
else
{
errorMessage = responseText;
}
}
}
isWorking = false;
}
void ResetValues()
{
errorMessage = "";
loginEmail = "";
loginPassword = "";
registerEmail = "";
registerPassword1 = "";
registerPassword2 = "";
registerUsername = "";
}
}将代码中的”http://YOUR_SITE.COM/”替换为你的域名
创建新的GameObject并将其命名为LoginSystem
将脚本拖拽到LoginSystem上，运行程序
原文地址:https://sharpcoderblog.com/blog/unity-3d-login-system-with-php-and-mysql