Question

This is for a data import script, I want to check if the Category Name with a Parent ID already exists; if it does then it does not need to be added to the database. My check however is not stopping duplicate entries.

$i = 1;
$check = FALSE;
echo'<br>';
do{
   //Turn import order into Colewood order. 
   $tieroffset = $i - 1;

   $tier = $csvdata[$r][$fields["Tier" . $i]];

   $query = ("SELECT name FROM base_categories WHERE name = '".$tier."' AND id = '".$tieroffset."'");
   $result = mysql_query($query);
   $result_array = mysql_fetch_array($result);

   if (empty($result_array)) {

       if($tier != null){ 
       $queryInsert = "INSERT INTO base_categories (parent_id,name) 
                        VALUES ('" . $tieroffset . "', '" . mysql_real_escape_string($csvdata[$r][$fields["Tier" . $i]]) . "')";
       }

        mysql_query($queryInsert);

        print_r($queryInsert);
   }                

   $i++;
}while ($i <= 6 || $check != FALSE);
echo'    >>>END PRODUCT<br>';

Answer 1

Use mysql_num_rows function to check the number of rows returned by the query.

if (empty($result_array)) {

to

if (mysql_num_rows($result) == 0 ) {