title: How can I achieve a new array with columns from another array's rows? [php]
body: <p>I have this kind of array:</p>
  <pre><code>2020-01; Starter1; 11,4%
  2020-01; Starter2; 6,9%
  2020-01; Starter3; 9,5%
  2020-01; Starter4; 11,1%
  2020-02; Starter1; 5,8%
  2020-02; Starter2; 5,8%
  2020-02; Starter3; 10,0%
  2020-02; Starter4; 6,4%
  </code></pre>
  <p>I need to obtain this:</p>
  <pre><code>Year;    Starter1; Starter2; Starter3; Starter4
  2020-01; 11,4%;     6,9%;     9,5%;     11,1%
  2020-02; 5,8%;     10,0%;     10,0%;    6,4%
  </code></pre>
  <p>Can anyone help me please?</p>