CURL请求数据，提示Sorry, an error occurred whil?400报错

url 也不贴, 怎么展拳脚?######

不好意思，代码如下，请帮忙看看.

<?php header('Content-Type:text/html;charset=utf-8'); /** * 设置COOKIE保存路径 */ $CookieFile = dirname(FILE).'/cookie.tmp';

/**
* 获取验证码及COOKIE
*/    
if(isset($_GET["img"])){

    $url = 'http://wzcx.njcgs.com/home/yzm';        

    $ch = curl_init($url);                    

    curl_setopt($ch,CURLOPT_COOKIEJAR, $CookieFile);    

    curl_exec($ch);            

    curl_close($ch);        

    exit();

}   


if(isset($_POST['sub'])){

    echo '<pre>';
    print_r($_POST);
    echo '</pre>';    


    foreach ($_POST as $key => $value){
         $info .= urlencode($key) . '=' . urlencode($value) . '&';  
    }

    $ch = curl_init();

    // 2. 设置选项
    curl_setopt($ch,CURLOPT_URL, "http://wzcx.njcgs.com/");        

    curl_setopt($ch,CURLOPT_COOKIEFILE, $CookieFile);

curl_setopt($ch,CURLOPT_REFERER, 'http://wzcx.njcgs.com/');

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

    curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);

    curl_setopt($ch,CURLOPT_POST, 1);

    curl_setopt($ch,CURLOPT_POSTFIELDS, $info);

    $s = curl_exec($ch);
   


   print_r($s);




    curl_close($ch);

}else{

?>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
    
        <form method="post" action="">
<input name="__RequestVerificationToken" type="hidden" value="UNQ2jcDZ9EA2BwjZC2I+Nqs4WgYeyrX2kIJ3qh0kywYxM0amesDzya+7vZ5R3mBHwlbuolQAZ4yy0G73ORSBLgHVTWaW3kXCs0IAwdbfXRgrGb/xvlZa7fSMJOPQLPyx6S4bNz6vioM8eKNpg63oX3nZEJlaRvc60l7aYTPGSwg=" />
<table cellpadding="6" cellspacing="0" align="center">
    <tr>
        <td>车　　型</td>
        <td>
            <select name="chexing">
              <option value="01">大型汽车</option>
              <option value="01">大型汽车</option>
              <option selected="selected" value="02">小型汽车</option>
              <option value="03">使馆汽车</option>
              <option value="04">领馆汽车</option>
              <option value="05">境外汽车</option>
              <option value="06">外籍汽车</option>
              <option value="07">两三轮摩托车</option>
              <option value="08">轻便摩托车</option>
              <option value="09">使馆摩托车</option>
              <option value="10">领馆摩托车</option>
              <option value="11">境外摩托车</option>
              <option value="12">外籍摩托车</option>
              <option value="13">农用运输</option>
              <option value="14">拖拉机</option>
              <option value="15">挂车</option>
              <option value="16">教练汽车</option>
              <option value="17">教练摩托车</option>
              <option value="18">试验汽车</option>
              <option value="19">试验摩托车</option>
              <option value="20">临时入境汽车</option>
              <option value="21">临时入境摩托车</option>
              <option value="22">临时行驶车</option>
              <option value="23">公安警车</option>
              <option value="99">其它</option>
            </select>
        </td>
        <td>&nbsp;</td>
        <td>起始时间</td>
        <td>
            <input name="begindate" type="text" value="2011-5-13" size="11" />
        </td>
    </tr>
    <tr>
        <td>车牌号码</td>
        <td>
            <input name="keywords" type="text" size="9" style="text-transform:uppercase;" value="苏ARX356" />
        </td>
        <td>&nbsp;</td>
        <td>结束时间</td>
        <td>
            <input name="enddate" type="text" value="2013-5-13" size="11" />
        </td>
    </tr>
    <tr>
        <td>发动机号</td>
        <td>
            <input name="fdjh" type="text" style="text-transform:uppercase;" value="000450" size="9" />
            后6位
        </td>
        <td>&nbsp;</td>
        <td>验 证 码</td>
        <td>
            <input name="rand" type="text" value="" size="5" />
            <img id="yzm_img" alt="验证码" width="60" height="20" src="?img=true" />
          
 
        </td>
    </tr>
    <tr>
        <td>&nbsp;</td>
        <td>
            <input id="submit" class="sub" type="submit" value="提交查询" name="sub"/>
        </td>
        <td>&nbsp;</td>
        <td>&nbsp;</td>
    </tr>
</table>

</form>

<?php }?>