title: PHP filter_require_array is failing
body: <p>I got an AJAX file which can get an array as POST variable. The array looks like this:</p>
  
  <pre><code>array(
      'NAME' =&gt; PRICE,
      'NAME2' =&gt; PRICE2
  )
  </code></pre>
  
  <p>For example, here's a var_dump about one possibility: (<code>var_dump($_POST['additions'])</code>)</p>
  
  <pre><code>array(2) {
      ["vloer"]=&gt;
      string(5) "50.00"
      ["dak"]=&gt;
      string(5) "20.00"
  }
  </code></pre>
  
  <p>To filter the array, I use the following line:</p>
  
  <pre><code>$additions = filter_input(INPUT_POST, 'additions', FILTER_REQUIRE_ARRAY);
  </code></pre>
  
  <p>To my shock, it returns false for some reason. I tried <code>filter_input_array</code> as well which didn't work. Even without the <code>FILTER_REQUIRE_ARRAY</code> it didn't work.</p>