<h1>用户注册</h1> <form method="post" action="register_verify.php"> <input type="text" placeholder="用户名" name="username"><br><br> <input type="password" placeholder="密码" name="password"><br><br> <input type="password" placeholder="重复密码" name="password2"><br><br> <label>性别： <input type="radio" name="sex" value="男" checked="checked">男 <input type="radio" name="sex" value="女">女</label><br><br> <input type="email" placeholder="邮箱" name="email"><br><br> <button class="btn" type="submit">注册</button> </form>
<?phprequire "mysql.php"; //导入mysql.php访问数据库$username=$_POST['username'];$password=$_POST['password'];$password2=$_POST['password2'];$sex=$_POST['sex'];$email=$_POST['email'];if(checkEmpty($username,$password,$password2,$sex,$email)){ if(checkpwd($password,$password2)){ if(checkEmail($email)){ if(insert($username,$password,$sex,$email)) echo"注册成功"; } }}//方法：判断是否为空function checkEmpty($username,$password,$password2,$sex,$email){ if($username==null||$password==null||$password2==null){ echo '<html><head><Script Language="JavaScript">alert("用户名或密码为空");</Script></head></html>' . "<meta http-equiv=/"refresh/" content=/"0;url=register.html/">"; } else{ if($sex==null){ echo '<html><head><Script Language="JavaScript">alert("性别为空");</Script></head></html>' . "<meta http-equiv=/"refresh/" content=/"0;url=register.html/">"; } elseif($email==null){ echo '<html><head><Script Language="JavaScript">alert("邮箱为空");</Script></head></html>' . "<meta http-equiv=/"refresh/" content=/"0;url=register.html/">"; } else{ return true; } }}//方法：检查两次密码是否相同function checkpwd($password,$password2){ if($password==$password2) return true; else echo '<html><head><Script Language="JavaScript">alert("两次密码不一致");</Script></head></html>' . "<meta http-equiv=/"refresh/" content=/"0;url=register.html/">";}//方法：邮箱格式验证function checkEmail($email){ $preg = '/^(/w{1,25})@(/w{1,16})(/.(/w{1,4})){1,3}$/'; if(preg_match($preg, $email)){ return true; }else{ echo '<html><head><Script Language="JavaScript">alert("邮箱格式有误");</Script></head></html>' . "<meta http-equiv=/"refresh/" content=/"0;url=register.html/">"; }}//方法：将数据插入数据库中function insert($username,$password,$sex,$email){ $conn=new Mysql(); $sql="insert into user VALUE (null,'$username','$password','$sex','$email')"; $result=$conn->sql($sql); if($result){ return true; } else{ echo '<html><head><Script Language="JavaScript">alert("写入数据库失败");</Script></head></html>' . "<meta http-equiv=/"refresh/" content=/"0;url=register.html/">"; } $conn->close();} 
