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    copied!<p>You can use multidimensional session arrays:</p> <pre><code>$_SESSION['wz_saving_b'][$_POST['wz_saving_b']] = $_POST['wz_saving_b']; </code></pre> <p>Or, just use [] to add new keys, but you are going to have duplicated values</p> <pre><code>$_SESSION['wz_saving_b'][] = $_POST['wz_saving_b']; </code></pre> <p>Let's say the user types in wz_saving_b the following things:</p> <p><code>1</code>, <code>2</code>, <code>3</code></p> <pre><code>&lt;?php session_start(); ?&gt; &lt;form method="POST" action=""&gt; &lt;label&gt;A:&lt;/label&gt; &lt;input name="wz_saving_a" type="text" /&gt; &lt;label&gt;B:&lt;/label&gt; &lt;input name="wz_saving_b" type="text" /&gt; &lt;input name="wz_submit_saving_1" type="submit" class="add_button" value="Add" /&gt; &lt;/form&gt; &lt;?php if(isset($_POST['wz_submit_saving_1'])): $_SESSION['wz_saving_b'][$_POST['wz_saving_b']] = $_POST['wz_saving_b']; ?&gt; &lt;div id="wz_config_1" class="wz_config"&gt; &lt;ul&gt; &lt;li&gt;Your dimensions:&lt;/li&gt; &lt;li&gt;B: &lt;?php if(isset($_SESSION['wz_saving_b'])): foreach($_SESSION['wz_saving_b'] as $k =&gt; $v) { echo "$v "; } endif; ?&gt; mm&lt;/li&gt; &lt;/ul&gt; &lt;?php endif; ?&gt; &lt;?php var_dump($_SESSION); ?&gt; </code></pre> <p>Output:</p> <pre><code> Your dimensions: B: 1 2 3 mm array (size=1) 'wz_saving_b' =&gt; array (size=3) 1 =&gt; string '1' (length=1) 2 =&gt; string '2' (length=1) 3 =&gt; string '3' (length=1) </code></pre> <hr> <p><strong>The requested abstraction:</strong></p> <pre><code>&lt;?php session_start(); ?&gt; &lt;form method="POST" action=""&gt; &lt;label&gt;A:&lt;/label&gt; &lt;input name="wz_saving_a" type="text" /&gt; &lt;label&gt;B:&lt;/label&gt; &lt;input name="wz_saving_b" type="text" /&gt; &lt;label&gt;C:&lt;/label&gt; &lt;input name="wz_saving_c" type="text" /&gt; &lt;label&gt;D:&lt;/label&gt; &lt;input name="wz_saving_d" type="text" /&gt; &lt;input name="wz_submit_saving_1" type="submit" class="add_button" value="Add" /&gt; &lt;/form&gt; &lt;?php if(isset($_POST['wz_submit_saving_1'])) { foreach($_POST as $key =&gt; $value) { if($key != 'wz_submit_saving_1') { $_SESSION[$key][] = $value; } } } ?&gt; &lt;div id="wz_config_1" class="wz_config"&gt; &lt;ul&gt; &lt;li&gt;Your dimensions:&lt;/li&gt; &lt;?php foreach($_SESSION as $k =&gt; $v): ?&gt; &lt;?php foreach($v as $saving =&gt; $wz): ?&gt; &lt;li&gt;&lt;?= strtoupper(substr($k, 10));?&gt; : &lt;?=$wz;?&gt; mm&lt;/li&gt; &lt;?php endforeach; ?&gt; &lt;?php endforeach; ?&gt; &lt;/ul&gt; &lt;?php var_dump($_SESSION); ?&gt; </code></pre> <p>I did some random inputs here with some numbers. The output is:</p> <pre><code> Your dimensions: A : 1 mm A : 6 mm A : 5 mm B : 1 mm B : 6 mm B : 5 mm C : 4 mm C : 8 mm C : 5 mm D : 4 mm D : 7 mm D : 5 mm array (size=4) 'wz_saving_a' =&gt; array (size=3) 0 =&gt; string '1' (length=1) 1 =&gt; string '6' (length=1) 2 =&gt; string '5' (length=1) 'wz_saving_b' =&gt; array (size=3) 0 =&gt; string '1' (length=1) 1 =&gt; string '6' (length=1) 2 =&gt; string '5' (length=1) 'wz_saving_c' =&gt; array (size=3) 0 =&gt; string '4' (length=1) 1 =&gt; string '8' (length=1) 2 =&gt; string '5' (length=1) 'wz_saving_d' =&gt; array (size=3) 0 =&gt; string '4' (length=1) 1 =&gt; string '7' (length=1) 2 =&gt; string '5' (length=1) </code></pre> <hr> <p>Based on the provided code, this should work, I tried to input one time <code>1</code> and <code>2</code> mm on position <code>x</code>, and then <code>4</code> and <code>5</code> mm on position <code>y</code>, the output was:</p> <pre><code>Rechte sparing 1 Formaat van de sparing: A: 1 mm B: 2 mm Positionering van de sparing: x Rechte sparing 1 Formaat van de sparing: A: 4 mm B: 5 mm Positionering van de sparing: y </code></pre> <p>Code:</p> <pre><code>&lt;?php if(isset($_POST['wz_submit_saving_1'])) : $straight_saving = array( 'wz_str_saving' =&gt; $_POST['wz_str_saving'], 'wz_saving_a' =&gt; $_POST['wz_saving_a'], 'wz_saving_b' =&gt; $_POST['wz_saving_b'], 'wz_submit_saving_1' =&gt; $_POST['wz_submit_saving_1'] ); $_SESSION['straight_saving'][] = $straight_saving; endif; if(isset($_SESSION['straight_saving'])) : foreach($_SESSION['straight_saving'] as $sav) { ?&gt; &lt;div class="wz_config"&gt; &lt;h3&gt;Rechte sparing 1&lt;/h3&gt; &lt;ul&gt; &lt;li&gt; &lt;ul&gt; &lt;li&gt;Formaat van de sparing:&lt;/li&gt; &lt;li&gt;A: &lt;?php echo $sav['wz_saving_a']; ?&gt; mm&lt;/li&gt; &lt;li&gt;B: &lt;?php echo $sav['wz_saving_b']; ?&gt; mm&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li&gt; &lt;ul&gt; &lt;li&gt;Positionering van de sparing:&lt;/li&gt; &lt;li&gt;&lt;?php echo $sav['wz_str_saving']; ?&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;div class="clear"&gt;&lt;/div&gt; &lt;/div&gt;&lt;!--End wz_config_1--&gt; &lt;?php } endif; ?&gt; </code></pre>
 

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