這是我可以放置多行的簡單形式<form action="" method="POST" name="domains">     <textarea name="message" rows="" cols="" name="domains" ></textarea>      <br></br>      <input type="submit"> <br></br>    <br></br>    </form>代碼：<?PHP$domains= $_POST['domains'];$url = 'the API url';這是令人困惑的部分。我如何將這些多行表單數(shù)據(jù)放入這個(gè)數(shù)組？$query = http_build_query(array(        'domains' => array(            $domain = explode("\n",$string)        )    ));$url = $url .'?'. $query;$ch = curl_init();$header = array('Content-Type: multipart/form-data');$headers = ['API-OPR: apikey '];curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);$output = curl_exec ($ch);echo $output; curl_close ($ch);$output = json_decode($output,true);?>