Cant Insert Values In Database, Wrong Code!

[sid0972]

hey, newbie here

 

i am writing a code to insert some values in database, it actually worked in the afternoon, but when i started the system in the night it magically stopped working.

 

First, i am taking the value in a text box, then forwarding it to a file to be stored in a variable, then calling a function (which is in yet another file) which stores the values in the database.

 

the code is here

 

text box

<form action="add.php" method="post">
<center><input type="text" name="abc" size="9" maxlength="9">
<br><br>
<input type="submit"  value="Save">

 

to hold "abc" in a variable

 

$abc=$_POST['abc'];

add_abc($abc);

 

to insert it in a database

 

<?php
session_start();


require_once('db_fns.php');


function add_abc($abc)
{
$valid_user = $_SESSION['valid_user'];


 $conn = db_connect();
 if ($result && ($result->num_rows>0)) {
   throw new Exception('already exists.');
 }

  if (!$conn->query("insert into scores (username,abc) values
    ('".$valid_user."', '".$abc."')")) {
   throw new Exception('could not be inserted.');
 }
else { echo "successful";}
 return true;

 

 

can anyone please tell me whats wrong here??

[sid0972]

and these are the error i get on file abc.php

 

PHP Notice: Undefined index: abc in /var/www/work/fns/add_oc_middle.php on line 5
PHP Notice: Undefined index: valid_user in /var/www/work/fns/add.php on line 13
PHP Notice: Undefined variable: result in /var/www/work/fns/add_oc_middle.php on line 16
PHP Fatal error: Uncaught exception 'Exception' with message 'Score could not be inserted.' in /var/www/work/fns/add_oc_middle.php:22
Stack trace:
#0 /var/www/work/fns/add_oc_middle.php(7): add_abc(NULL)
#1 {main}
thrown in /var/www/work/fns/add.php on line 22

Edited December 31, 2012 by sid0972

[sid0972]

can anyone please tell me whats wrong with my code???

[Jessica]

Sounds like the form isn't being posted. You need to do some debugging on your own, especially since you have only shown us snippets of the code. Walk through it and check the values at every step you can find, until you find it doesn't match your assumptions.

[sid0972]

i tried but to no avail

 

if you want i can post the whole code here itself...

 

tried to google also, nothing came up

Edited January 14, 2013 by sid0972

[sid0972]

well i found the solution....

 

i studied the basics of php and mysql thoroughly this time

and got through it