百度翻译php接口，火车头插件

<?php

define("CURL_TIMEOUT",   30); 
define("URL",            "http://api.fanyi.baidu.com/api/trans/vip/translate"); 
define("APP_ID",         "YOUR APP ID"); //替换为您的APPID
define("SEC_KEY",        "YOUR SEC KEY");//替换为您的密钥
define("FROM",    	     "zh");//采集的源语言标识码，默认为中文“zh”
define("TO",    	     "en");//翻译后的目标语言标识码，默认翻译为英文“en”


function translate($query)
{
    $args = array(
        'q' => $query,
        'appid' => APP_ID,
        'salt' => rand(10000,99999),
        'from' => FROM,
        'to' => TO,

    );
    $args['sign'] = buildSign($query, APP_ID, $args['salt'], SEC_KEY);
    $ret = call(URL, $args);
    $ret = json_decode($ret, true);
	
	if (isset($ret['error_code'])) 
	{
		switch ($ret['error_code']) 
		{
			case 52003:
				return "错误代码（".$ret['error_code']."）：APP_ID不正确,请检查您填写的APP_ID是否和百度翻译开放平台申请的一致。";
				break;
			case 54001:
				return "错误代码（".$ret['error_code']."）：密钥不正确,请检查您填写的密钥是否和百度翻译开放平台申请的一致。";
				break;
			case 54000:
				return "错误代码（".$ret['error_code']."）：翻译内容为空，请检查您的采集规则是否正确，出现本错误可能软件未采集到内容。";
				break;
			case 54004:
				return "错误代码（".$ret['error_code']."）：余额不足，您的免费字符已用完或余额不足，请登陆百度翻译开放平台充值。";
				break;
			case 58001:
				return "错误代码（".$ret['error_code']."）：译文语言方向错误，请检查您设置的目标语言标识码是否正确。";
				break;
			default:
				return "错误代码（".$ret['error_code']."）：不可预知的错误，请登陆http://www.sizuo.org/locoy-baidutransapi.html查看解决方案。";
				break;
		}
	}

    return $ret["trans_result"]["0"]["dst"]; 
}

function buildSign($query, $appID, $salt, $secKey)
{
    $str = $appID . $query . $salt . $secKey;
    $ret = md5($str);
    return $ret;
}

function call($url, $args=null, $method="post", $testflag = 0, $timeout = CURL_TIMEOUT, $headers=array())
{
    $ret = false;
    $i = 0; 
    while($ret === false) 
    {
        if($i > 1)
            break;
        if($i > 0) 
        {
            sleep(1);
        }
        $ret = callOnce($url, $args, $method, false, $timeout, $headers);
        $i++;
    }
    return $ret;
}

function callOnce($url, $args=null, $method="post", $withCookie = false, $timeout = CURL_TIMEOUT, $headers=array())
{
    $ch = curl_init();
    if($method == "post") 
    {
        $data = convert($args);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_POST, 1);
    }
    else 
    {
        $data = convert($args);
        if($data) 
        {
            if(stripos($url, "?") > 0) 
            {
                $url .= "&$data";
            }
            else 
            {
                $url .= "?$data";
            }
        }
    }
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    if(!empty($headers)) 
    {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    if($withCookie)
    {
        curl_setopt($ch, CURLOPT_COOKIEJAR, $_COOKIE);
    }
    $r = curl_exec($ch);
    curl_close($ch);
    return $r;
}

function convert(&$args)
{
    $data = '';
    if (is_array($args))
    {
        foreach ($args as $key=>$val)
        {
            if (is_array($val))
            {
                foreach ($val as $k=>$v)
                {
                    $data .= $key.'['.$k.']='.rawurlencode($v).'&';
                }
            }
            else
            {
                $data .="$key=".rawurlencode($val)."&";
            }
        }
        return trim($data, "&");
    }
    return $args;
}

if($LabelArray['PageType']=="Save")
{
	
        $LabelArray['标题'] = translate($query = $LabelArray['标题']);
		$LabelArray['翻译的内容'] = translate($query = $LabelArray['内容']);
}
echo serialize($LabelArray);

?>

网上找的，API要申请，然后Token自己填写进去