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);
?>