title: PHP Mysql select email using MD5 on where clause
body: <p>Consider this:</p>
  
  <pre><code>$email = 'c5dfd29d956b52c1ffa00ce4a06abad2'; // From the query string (MD5)
  
  $result = mysql_query('SELECT * FROM ' . $table
            . ' WHERE MD5(email_address) = ' . $email);
  
  $row = mysql_fetch_array($result);
  echo $row['email_address'];
  </code></pre>
  
  <p>I want to get the value from the 'email_column' if the hashed emails are the same (From the database and from the query string using MD5). What is the correct way of doing this?</p>