title: Save multiple session variables with a form
body: <p>I am working on a form with fields for dimensions where a customer can fill these fields in and submit them and they will be saved in session variables. So far I succeeded 1 form, but after saving 1 time the data of the fields it needs to be possible for the costumer that he can fill in a form again (for dimensions) and still another and another etc etc.</p>
  
  <p>(I started the session in top of my header)</p>
  
  <p>The form:</p>
  
  <pre><code>&lt;form method="POST"&gt;
  
     &lt;label&gt;A:&lt;/label&gt;
     &lt;input name="wz_saving_a" type="text" /&gt;
  
     &lt;label&gt;B:&lt;/label&gt;
     &lt;input name="wz_saving_b" type="text" /&gt;
  
     &lt;input name="wz_submit_saving_1" type="submit" class="add_button" value="Add"  /&gt;
  
  &lt;/form&gt;
  </code></pre>
  
  <p>PHP for saving data in $_SESSION:</p>
  
  <pre><code>if(isset($_POST['wz_submit_saving_1'])) :
  
      // Save submit
      $_SESSION['wz_submit_saving_1'] = $_POST['wz_submit_saving_1'];
  
      // Save wz_saving_a in session
      $_SESSION['wz_saving_a'] =  $_POST['wz_saving_a'];
  
      // Save wz_saving_b in session
      $_SESSION['wz_saving_b'] = $_POST['wz_saving_b'];
  
  endif;
  </code></pre>
  
  <p>After submit I show the submitted data to the costumer like:</p>
  
  <pre><code>&lt;?php if(isset($_SESSION['wz_submit_saving_1'])) : ?&gt;
  
  &lt;div id="wz_config_1" class="wz_config"&gt;
  
  &lt;ul&gt;
     &lt;li&gt;Your dimensions:&lt;/li&gt;
     &lt;li&gt;A: &lt;?php if(isset($_SESSION['wz_saving_a'])) : echo $_SESSION['wz_saving_a']; endif; ?&gt; mm&lt;/li&gt;
     &lt;li&gt;B: &lt;?php if(isset($_SESSION['wz_saving_b'])) : echo $_SESSION['wz_saving_b']; endif; ?&gt; mm&lt;/li&gt;
  &lt;/ul&gt;   
  
  &lt;?php endif; ?&gt;  
  </code></pre>
  
  <p>So this works for 1 submit and if I submit the form the session variables of the first will be refreshed by the new data, but now I need something to do so the costumer can add multiple dimensions sets and save in the Session.</p>
  
  <p>My idea was to change every name of a field by _1 _2 _3 after each form submit. But I don't know how to fix this so I hope someone can give me some advice.</p>
  
  <p>I can give the url of my example if you want?</p>
  
  <p>Thanks!</p>