Error Index undefined when i try send from android to mysql database

Question

So currently i made menu to send a data from android to mysql database, but when i press send button that error always come, here is my php code(addKomen.php)

<?php 
if($_SERVER['REQUEST_METHOD']=='POST'){

    //Getting values
    $nama = $_POST['nama'];
    $email = $_POST['email'];
    $isi = $_POST['isi'];

    //Creating an sql query
    $sql = "INSERT INTO email (nama,email,isi) VALUES ('$nama','$email','$isi')";

    //Importing our db connection script
    require_once('dbConnect.php');

    //Executing query to database
    if(mysqli_query($con,$sql)){
        echo 'Added Successfully';
    }else{
        echo 'Could Not Add';
    }

    //Closing the database 
    mysqli_close($con);
}

?>

So the problem is in my android code, because i type different variable thanks for all the answer and then the problem is in my android code. Best regards

Then you're not posting the data correctly, which means that the issue is in your android code, not the PHP part. You should show us _all_ the relevant code. — M. Eriksson, Aug 20 '17 at 07:42
Possible duplicate of [PHP: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset"](https://stackoverflow.com/questions/4261133/php-notice-undefined-variable-notice-undefined-index-and-notice-undef) — hassan, Aug 20 '17 at 07:44
NEVER TAKE USER SENT DATA AND INSERT IT INTO SQL DIRECTLY. Always do it through bind variables. Its both more efficient (the db can optimize the query) and its secure. I could trash your database in 30 characters with this code. — Gabe Sechan, Aug 20 '17 at 07:47
so what should i do? do you have any example of it? it'll be pleasure — Syamsul Maarif, Aug 20 '17 at 08:02

score 0 · Accepted Answer · answered Aug 20 '17 at 07:45

You are not posting the data correctly, and to resolve the undefined index: nama use isset() to check whether the index you are trying to get is exist or not like:

if( isset( $_POST['nama'] ) )
{
    // This block will execute only if nama have some value in it.
}

Error Index undefined when i try send from android to mysql database

1 Answers1