data is not entering in created database

hallo ,

i have wriiten simple php script , below.
created databse "dollar1_allinfo" with table 'totalinfo'

but on clicking submit button ,

information entered is not entering in database.

also,  echo statements are also not displaying after submit

<?php
if ($submit)
{
$db = mysql_connect("localhost","root");
mysql_select_db("dollar1_allinfo",$db);
mysql_query("INSERT INTO totalinfo (username,password,) VALUES ('$loginusern
ame','$loginpassword')");

echo 'thank you';
echo 'So Hurry Up';
}
?>





thank you.



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