Simple php login script for Beginners

**vengad11** · 01-15-2010, 05:28 AM

php login script, shown below, uses HTML form for data input, and extraction of existing logins and passwords is made from MySQL database. Access to page.php is closed, but with the help of authorization we can receive access to it:

Code:

<?
session_start(); //initialize session mechanism

if(!isset($_POST['ok'])) {
// if the form is not completed, display it
    echo"
    <html>
    <head>
    <title>Authorization page</title>
    </head>
    <body>
    <table width='100%' height='100%'>
    <form method='POST' action='login.php'>
    <tr><td align=center>
    <table>
    <tr><td>
    <table>
    <tr><td>Login:</td><td><input type='text'
        name='login' size='15'></td></tr>
    <tr><td>Password:</td><td><input
        type='password' name='pass' size='15'></td></tr>
    </table>
    </td></tr>
    <tr><td align=center><input type='submit' name='ok'
        value='Enter'></td></tr>
    </table>
    </td></tr>
    </form>
    </table>
    </body>
    </html>
    ";
}
else{    
    //supposed that user data
    //is saved in database, in users table, that includes id, login, pass fields

    $db=mysql_connect('host', 'login', 'password');
    mysql_select_db('db_name', $db);
    
    //check if there is a user with such login and password
    $res=mysql_query("SELECT * FROM users WHERE login='".$_POST['login']."'
        AND pass='".$_POST['pass']."'", $db);
    if(mysql_num_rows($res)!=1){    //such user doesn’t exist
        echo "Incorrect login and password";
    }
    else{    //user is found
        $_SESSION['login']=$_POST['login'];    //set login & pass
        $_SESSION['pass']=$_POST['pass'];
        Header("Location: protected.php");    // redirect him to protected.php
    }
    
    mysql_close();
}
?>

This sample of php login script describes easy way of access control with convenient method of saving user data in database. Here is another simple php login script that saves all inputted login and password in arrays $_POST and $_GET

Code:

<html>
    <head><title>Welcome to PHP</title></head>
    <body>
<?php
    if ($login = $_POST["login"]) {
        echo "<b>Привет, login!</b>";
    }
?>
<form method="post">
  your login:&nbsp;&nbsp;<input type="text" name="login"/><br/>
  <input type="submit" value="Enter"/>
</form>
</body>
</html>

Good luck.

**lankaentrepreneur** · 01-15-2010, 09:44 AM

Great Work Penquin, keep it up

**nfreelance** · 01-31-2010, 03:42 AM

What will be the names of the files? And how will I link second file to first? You haven't mentioned any link for first file in second file. Please mention file names too.

**jasmine** · 04-01-2010, 11:48 PM

I am new to PHP .So please explain more about the coding .I thought that PHP is very difficult to learn.Is that right.

**szlazsenki** · 05-07-2010, 08:53 PM

great info,i wil apply this into my new web design and it's very simple to do,just copy and paste right!!

**benjamin1greer** · 09-02-2010, 09:57 PM

Great work ! Keep it on ...

**Maahaza1** · 10-31-2010, 10:18 PM

Hy thanks for sharing....
I really don,t have any idea about php but i want to learn php can you tell me how can and where can i learn php online

Thanks in advance!!