PHP+MYSQL 用户注册登录代码

HTML注册页

     <form action="reg.php" method="post" name="form_register" "return check()"> 
   
            
     			
                <!--用户名-->
                <div class="LoginForm userName">
                    <label class="loginIcoSet"></label>
                    <input type="text" id="name" name="name" placeholder="姓名"/>
                     
                    
                </div>
                
                <div class="LoginForm userName">
                    <label class="loginIcoSet"></label>
                    <input type="text" name="username" id="username" placeholder="手机号"/>
                     
                    
                </div>

                <!--用户密码-->
                <div class="LoginForm password">
                    <label class="loginIcoSet"></label>
                    <input type="password" name="password" id="password" placeholder="请输入密码"/>
                 
                </div>
                
                <div class="LoginForm password">
                    <label class="loginIcoSet"></label>
                    <input type="password" name="assertpassword" id="assertpassword" placeholder="请确认密码">
                 
                </div>
                
                <div class="LoginForm userName">
                    <label class="loginIcoSet"></label>
                    <input type="text" name="shenfen" id="shenfen" placeholder="身份证号"/>
                     
                    
                </div> 
                
                <div class="LoginForm userName">
                    <label class="loginIcoSet"></label>
                    <input type="text" name="youx" id="youx" placeholder="邮箱地址"/>
                </div> 
                
              
                
                
              
                
                <div class="LoginForm userName">
                    <label class="loginIcoSet"></label>
                    <input type="text" id="tuijian" name="tuijian" placeholder="推荐人"/>
                </div> 
              
                

                <!--登录按钮-->
                <div class="LoginForm submit">
                    <button class="loginBtn btnz1Set" type="submit">注册</button>
                </div>

                <!--免费注册-->
                <div class="login-links">
                    <a class="textSet" href="javascript:void(0)" title="忘记密码" id="idBoxFpass">忘记密码</a>
                    <a class="btnz2Set" href="reg.html;">会员注册</a>
                </div>
       </form>