PHP-用户登录注册接口_php用户账号密码登录的接口

新版本的PHP中mysql_conntent()【regcheck.php】等函数改成了mysqli_conntent()【logincheck.php】，参数也有所变化。但不影响正常使用。出现警告时用函数

error_reporting(0)隐藏警告

登录-login.php：

   <form action="logincheck.php" method="post">  
    用户名：<input type="text" name="username" />  
    <br />  
    密码：<input type="password" name="password" />  
    <br />  
    <input type="Submit" name="Submit" value="登陆" />  
          
    <a href="register.php">注册</a>  
</form>

登录检测-logcheck.php：

    <?php  
        if(isset($_POST["Submit"]) && $_POST["Submit"] == "登陆")  
        {  
            $user = $_POST["username"];  
            $psw = $_POST["password"];  
            if($user == "" || $psw == "")  
            {  
                echo "<script>alert('请输入用户名或密码！'); history.go(-1);</script>";  
            }  
            else  
            {  
                $con = mysqli_connect("localhost","root","root");  
                mysqli_select_db($con ,"vt");  
                mysqli_query($con,"set names 'gbk'");  
                $sql = "select username,password from user where username = '$_POST[username]' and password = '$_POST[password]'";  
                $result = mysqli_query($con ,$sql);  
                $num = mysqli_num_rows($result);  
                if($num)  
                {  
                    $row = mysqli_fetch_array($result,MYSQLI_NUM);  //将数据以索引方式储存在数组中  
                    echo $row[0];  
                }  
                else  
                {  
                    echo "<script>alert('用户名或密码不正确！');history.go(-1);</script>";  
                }  
            }  
        }  
        else  
        {  
            echo "<script>alert('提交未成功！'); history.go(-1);</script>";  
        }  
      
    ?>  

注册-register.php:

<form action="regcheck.php" method="post">  
    用户名：<input type="text" name="username"/>  
    <br/>  
    密　码:<input type="password" name="password"/>  
    <br/>  
    确认密码：<input type="password" name="confirm"/>  
    <br/>  
    <input type="Submit" name="Submit" value="注册"/>  
</form> 

注册检测-regcheck.php:

    <?php  
		error_reporting(0);
        if(isset($_POST["Submit"]) && $_POST["Submit"] == "注册")  
        {  
            $user = $_POST["username"];  
            $psw = $_POST["password"];  
            $psw_confirm = $_POST["confirm"];  
            if($user == "" || $psw == "" || $psw_confirm == "")  
            {  
                echo "<script>alert('请确认信息完整性！'); history.go(-1);</script>";  
            }  
            else  
            {  
                if($psw == $psw_confirm)  
                {  
                    mysql_connect("localhost","root","root");   //连接数据库  
                    mysql_select_db("vt");  //选择数据库  
                    mysql_query("set names 'gdk'"); //设定字符集  
                    $sql = "select username from user where username = '$_POST[username]'"; //SQL语句  
                    $result = mysql_query($sql);    //执行SQL语句  
                    $num = mysql_num_rows($result); //统计执行结果影响的行数  
                    if($num)    //如果已经存在该用户  
                    {  
                        echo "<script>alert('用户名已存在'); history.go(-1);</script>";  
                    }  
                    else    //不存在当前注册用户名称  
                    {  
                        $sql_insert = "insert into user (username,password,phone,address) values('$_POST[username]','$_POST[password]','','')";  
                        $res_insert = mysql_query($sql_insert);  
                        //$num_insert = mysql_num_rows($res_insert);  
                        if($res_insert)  
                        {  
                            echo "<script>alert('注册成功！'); history.go(-1);</script>";  
                        }  
                        else  
                        {  
                            echo "<script>alert('系统繁忙，请稍候！'); history.go(-1);</script>";  
                        }  
                    }  
                }  
                else  
                {  
                    echo "<script>alert('密码不一致！'); history.go(-1);</script>";  
                }  
            }  
        }  
        else  
        {  
            echo "<script>alert('提交未成功！'); history.go(-1);</script>";  
        }  
    ?>