how to set submit.

hallo,

clicking on submit entered info. is not entering in database.

how to set submit , so that query wll execute correctly.



?php

if($submit)
{

$dbh=mysql_connect ("localhost", "root") or die ('I cannot connect
to
the database because: ' . mysql_error());
mysql_select_db ("dollar1_allinfo");

mysql_query("INSERT INTO totalinfo (Username,Password) VALUES
('$loginusername','$loginpassword')")or die (mysql_error());

}
?>


thank you.


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