Re: another php question

Looks pretty good so far.

You can check if a form variable represents a numeric string by using
is_numeric(). It's a little bit clearer and probably a little bit
faster than using ereg().

You've already got the code in place to check that the fields are not
empty and that $mobile contains only numbers. So the only thing left
is to lookup $code in the database. The next section might look
something like this (pseudocode):

$sql = "select count(*) items from code_table where code = '$code'";
//Run the query
if (items == 0) {
header( "Location: http://www.mysite.com/badcode.php"; );
}

//Send email
//delete the row from the database

.

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