Notice: Undefined index

JohnYX

can some one help me with this please;

Notice: Undefined index: username in P:\easyphp\www\Violet Registration Form\index.php on line 9

Notice: Undefined index: email in P:\easyphp\www\Violet Registration Form\index.php on line 10

Notice: Undefined index: password in P:\easyphp\www\Violet Registration Form\index.php on line 11

<?php $mysql_hostname = "localhost"; $mysql_user = "root"; $mysql_password = ""; $mysql_database = "johnXY"; $prefix = ""; $bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Could not connect database"); mysql_select_db($mysql_database, $bd) or die("Could not select database"); $username=$_POST['username']; $email=$_POST['email']; $password=$_POST['password']; $query="INSERT INTO `member`(`username`, `email`, `password`)VALUES('".$username."', '".$email."', '".hash('sha256', $password)."')"; $data = mysql_query ($query)or die(mysql_error()); mysql_close(); ?>

ebypaul

In some cases, there wont be any POST data so it will be showing error. Use isset() function inside the if statement.

rohit

if(isset($_POST['username']) && isset($_POST['email']) && isset($_POST['password']))
{
    $username=$_POST['username']; 
    $email=$_POST['email']; 
    $password=$_POST['password']; 

    $query="INSERT INTO `member`(`username`, `email`, `password`)VALUES('".$username."', '".$email."', '".hash('sha256', $password)."')"; 
    $data = mysql_query ($query)or die(mysql_error()); 
    mysql_close(); 
}

ccir105

Make proper validation of every user input before using them. Like using isset empty function and checking proper datatype of the varible is recommend before inserting into database.