error when running a query

Hello,

I have created a plugin that is suppose to add a new record to a
new table I created in my WordPress database.

However, when I run the query shown below I get the following error:

“Invalid query: Access denied for user ‘apache’@’localhost’ (using password: NO)”

$sSQL = “INSERT INTO wp_product_info “;
$sSQL .= “(“;
$sSQL .= “ProdNum, ProdName, ProdDesc, “;
$sSQL .= “ProdRegPrice, ProdSalePrice, “;
$sSQL .= “Available, OnSale, ProdPic “;
$sSQL .= “) “;
$sSQL .= “VALUES “;
$sSQL .= “(“;
$sSQL .= ” ‘$sProdNum’, ‘$sProdName’, ‘$sProdDesc’, “;
$sSQL .= ” $sTemp1, $sTemp2, “;
$sSQL .= ” ‘$sAvailable’, ‘$sOnSale’, ” “;
$sSQL .= “) “;

$iResult = mysql_query($sSQL);

if (! $iResult)
{
die (‘Invalid query: ‘ . mysql_error());
}
else
{
print (“record inserted”);
}

How do I fix this?