Check If Specific Record Exists With Pop-Up

hi

//** Check if specific record exists ****

global $conn;

$strSQLExists = "select * from data where Name='".$values["Name"]."' and Email='".$values["Email"]."' and Magazine='".$values["Magazine"]."'";

$rsExists = db_query($strSQLExists,$conn);

$data=db_fetch_array($rsExists);

if($data)

{

//echo "Duplicate Entries, Try Again";

$result['msg'] = "Record already exists";

return false;

}

else

{

return true;}

may i know where shd i place this code => alert(result['msg']);
please advise with thanks