PHP 访问URL 解决AJAX 跨域问题

<?php
  $ch = curl_init();
  $rainbowdash = $_POST['args'];
  $fields = array( 'args='=>$rainbowdash);
  $postvars = ''; 
  foreach($fields as $key=>$value) {
    $postvars .= $key . $value;
  }

  $url = "http://192.168.62.89:9090/tts";
  curl_setopt($ch,CURLOPT_URL,$url);
  curl_setopt($ch,CURLOPT_POST,count($fields));
  curl_setopt($ch,CURLOPT_POSTFIELDS,$postvars);
  curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch,CURLOPT_CONNECTTIMEOUT ,3);
  curl_setopt($ch,CURLOPT_TIMEOUT, 20);
  $response = curl_exec($ch);
 
  echo $response;
  curl_close ($ch);
?>