troubleshooting Question

Check if an entered email address exists in 2 tables

Avatar of peps03
peps03 asked on
DatabasesPHPMySQL Server
5 Comments1 Solution778 ViewsLast Modified:

I have two tables, students and companies which both have a column named email. I need to check if an entered emailaddress exists in the tables.

I tried this:

$query = "select
      NOT EXISTS (select email from students where email = '$email[2]') AND
      NOT EXISTS (select email from companies where email = '$email[2]')";

      $result = mysql_query($query) or die(mysql_error());
      if (mysql_num_rows($result))

But this always returns that the email address already exists.

How should i preform this check correctly?
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