当前位置：网站首页>Day6: using PHP to write landing pages

Day6: using PHP to write landing pages

2022-07-29 08:20:00 【EdmunDJK】

DAY6： utilize PHP Write landing page

Here the code is released directly , Too lazy , I won't explain it in detail

Create several here php file
Please add a picture description

1、 Code display

The file with blue background in the figure , Here release the code （login.php、signup.php、conn.php）

1.1、login.php

<?php
    error_reporting(0);
    session_start();
    $postUsername =isset($_POST['username'])? $_POST['username'] : '';// user name 
    $postpassword =isset($_POST['password'])? $_POST['password'] : '';// password 
    $conn = mysqli_connect("127.0.0.1","root","admin123", "regist") or die(" Database connection error ！");// Corresponding database address   user name   And password 
    $sql ="SELECT username,password1 FROM users WHERE username ='$postUsername'";
    $query =mysqli_query($conn,$sql);
    $row =mysqli_fetch_array($query,MYSQLI_ASSOC);
    $username =isset($row['username'])? $row['username'] : '';
    $password =isset($row['password1'])? $row['password1'] : '';
    $_SESSION["username"]=$postUsername;
    if(isset($_POST['login']))
    {
        if($username ==$postUsername && $password==$postpassword)
        {    
            echo"<script>alert(' Login successful ');window.location ='1.php'</script>";
        }
        else
        {
             echo"<script>alert(' Wrong user name or password ！');history.go(-1)</script>";
        }
    }
    
    $user;
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title> Landing page </title>
</head>
<body>
    <h2> Landing page </h2>
    <form action ="" method = "post" name ="myform" ousubmit ="return Checked();">
       <table>
            <tr>
                <td> user name ：</td>
                <td><input type="text" name="username"></td>
            </tr>
            <tr>
                <td> password ：</td>
                <td><input type="password" name="password"></td>
            </tr>
            <tr>
              <td><input type="submit" name="login" value=" Sign in "></td>
              <td><a href ="signup.php"> register </a></td>
            </tr>
            <tr>
               <td><a href="7.html"> Back to the home page </a></td>
            </tr>
        </table>
    </form>
</body>
</html>

Because there are some problems written before , Debugging will include() Function comments , So this file is not used include(conn.php);

1.2、signup.php：

<?php
    session_start();
    include("conn.php");// Connect to database 
    $username =isset($_POST['username'])? $_POST['username'] : '';// user name 
    $password2 =isset($_POST['password2'])? $_POST['password2'] : '';// password 
    $password1 =isset($_POST['password1'])? $_POST['password1'] : '';
 
if(isset($_POST['signup']))
{
    if($password2==$password1)
    {
        $sql ="INSERT INTO users VALUE('$username','$password2');";
        mysqli_query($conn,$sql);
        echo "<script>alert(' Registered successfully ');window.location ='login.php';</script>";
    }
    else
    {
        echo "<script>alert(' The two passwords don't match ！');window.location ='login.php';</script>";
    }
}
 
 
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h2> Registration page </h2>
    <form action ="" method = "post" name ="myform" ousubmit ="return Checked();">
       <table>
            <tr>
                <td> user name ：</td>
                <td><input type="text" name="username"></td>
            </tr>
            <tr>
                <td> password ：</td>
                <td><input type="password" name="password1"></td>
            </tr>
            <tr>
                <td> Confirm the password ：</td>
                <td><input type="password" name="password2"></td>
            </tr>
            <tr>
              <td><input type="submit" name="signup" value=" register "></td>
              <td><a href ="login.php"> Sign in </a></td>
            </tr>
            <tr>
               <td><a href="7.html"> Back to the home page </a></td>
            </tr>
        </table>
    </form>
</body>
</html>

1.3、conn.php

<?php
   $conn = mysqli_connect("127.0.0.1","root","admin123") or die(" Database connection error ！");// Corresponding database address   user name   And password 
   $selected = mysqli_select_db($conn,"regist");
?>