Not inserting into DB

[HDFilmMaker2112]

The below isn't inserting the credits into the database. The credit entries are not duplicates. So the IGNORE in the INSERT shouldn't be the issue correct? I attempted to insert Test, Test2

 

elseif($_GET['do']="process"){
$source=sanitize($_GET['source']);
$name=sanitize($_POST['name']);
$email=sanitize($_POST['email']);
$amount=amount_verify(sanitize($_POST['amount']));
$username=sanitize($_POST['username']);
$level=sanitize($_POST['level']);
$password=kam3($_POST['password']);
$admin=sanitize($_POST['user_level']);
$credits=sanitize($_POST['credit']);

if($amount=="00"){
$amount="";
}

if($_GET['source']=="new"){
$add_user_query="INSERT INTO $tbl_name (username, name, level, amount, password, admin, email) VALUES ('$username', '$name', '$level', '$amount', '$password', '$admin', '$email')";
mysql_query($add_user_query);
if(!empty($credit)){
$insert_id=mysql_insert_id();
$CreditArray = array();
foreach($credits as $credit){
$CreditArray[] = "('$credit','$insert_id')";
}
if (count($CreditArray) > 0 ) {
$credit_array_query="INSERT IGNORE INTO $tbl_name2 (credit,donor_id) VALUES " . implode(',',$CreditArray);
mysql_query($credit_array_query);
}
}

}
elseif($_GET['source']=="edit"){

}

}