Why does my array start with empty value?

Question

I can't wrap my head around this one.

When I create an array it begins with an empty value. The values that needs to be in the array starts as second.

Array:

Array ( 

 [0] => 

 [1] => Value 1 

 [2] => Value 2 

 [3] => Value 3

)

Code:

$categories = array();
$query2 = mysql_query("SELECT * FROM books_categories");
do{
    array_push($categories, $category['description']);
}while($category=mysql_fetch_assoc($query2));

How do I accomplish to get the first item in the array to be Value 1?

Answer 1

It is because of do while loop try while loop

while($category=mysql_fetch_assoc($query2)){
    array_push($categories, $category['description']);
}