问如何将wordpress the_content()分成几部分

EN

add_filter('the_content','filterContentForGoogleAds',10,1);
function filterContentForGoogleAds($content){
  $contentToReturn = '';
  $mycontent = '</br>Your google ads code here</br>';
  $CompleteContent = $content;
  $ContentArray = explode (' ',$CompleteContent);
  $ContentCLength = count($ContentArray);
  $firstHalfEnd  = ceil($ContentCLength/2);

  for ($i=0; $i < $firstHalfEnd; $i++) { 
    $contentToReturn .= ' '.$ContentArray[$i];
  }

  $contentToReturn .= $mycontent;



  for ($i=$firstHalfEnd; $i < $ContentCLength; $i++) { 
    $contentToReturn .= ' '.$ContentArray[$i];
  }

  return $contentToReturn;
}