title: phppass password with quote marks doesn't validate
body: <p>When I submit trough a form a password with a quotation mark <code>"</code>
  and use:</p>
  
  <pre><code>$hasher = new PasswordHash(10, FALSE);
  $hasher-&gt;CheckPassword($password_safe, $retrieved_password));
  </code></pre>
  
  <p>It always fails.</p>
  
  <p>But if I specify the <code>$password_safe</code> as</p>
  
  <pre><code>$password_safe = 'myPass"word';
  </code></pre>
  
  <p>It validates correctly. How can I escape the <code>$password_safe</code> so that the validation can still be done?</p>