title: Auto change order status from hold-on to processing in Woocommerce
body: <p>I would like to <strong>change</strong> <strong>every</strong> <strong>order</strong> <strong>from</strong> woocommerce with the status <strong>'HOLD-ON'</strong> <strong>to 'PROCESSING'</strong> <em>with php</em>. </p>
  
  <p>I already tried to write a function <em>in the functions.php</em> file but I failed. </p>
  
  <p>How can I auto change order status from "hold-on" to "processing" in Woocommerce? </p>