Notice: Undefined offset: 0 in

Question

I am getting this PHP error, what does it mean?

Notice: Undefined offset: 0 in 
C:\\xampp\\htdocs\\mywebsite\\reddit_vote_tut\\src\\votes.php on line 41


        

Answer 1

If you leave out the brackets then PHP will assign the keys by default.

Try this:

$votes = $row['votes_up']; 
$votes = $row['votes_down']; 

Answer 2

In my case it was a simple type

$_SESSION['role' == 'ge']

I was missing the correct closing bracket

$_SESSION['role'] == 'ge'

Answer 3

getAllVotes() isn't returning an array with the indexes 0 or 1. Make sure it's returning the data you want by calling var_dump() on the result.

Answer 4

Use mysql row instead

mysql_fetch_row($r)

Meanwhile consider using mysqli or PDO

?>

Answer 5

its just a warning use:

error_reporting(0);

it shows when we do not initialize array and direct assigning value to indexes.

somefunction{
$raja[0]="this";
$raja[1]="that";
}

instead :

somefunction{
$raja=array(0=>'this',1='that');
//or
$raja=array("this","that");
}

it just notification, do not generate any output error or any unexpected output.

Answer 6

Use print_r($votes); to inspect the array $votes, you will see that key 0 does not exist there. It will return NULL and throw that error.