PHP - 无效请求（意外的EOF）

I am relatively new to PHP. I am trying to display a XML response from a restful Web Service. Below is my code snippet:

<?php
      if(isset($_GET['submit'])){

        $name = $_GET['company'];

        $url = "http://dev.markitondemand.com/MODApis/Api/v2/Lookup/xml?input=$name";
        $client = curl_init($url);
        curl_setopt($client, CURLOPT_RETURNTRANSFER, 1);
        $response = curl_exec($client);
        $xml = new SimpleXMLElement($response);
        curl_close($client);

        foreach($xml->LookupResultList as $oEntry){
          echo $oEntry->LookupResultList->LookupResult[i]->symbol . "
";
        }
      }
    ?>

I get the following error in the console:

Invalid request (Unexpected EOF)

Also $xml is blank.

In your foreach loop you have to use directly <LookupResult> tag, and inside the loop you don't have to call the complete three, but only the <LookupResult> child(ren):

foreach( $xml->LookupResult as $oEntry )
{
    echo $oEntry->Symbol . PHP_EOL;
}

Also, I don't know what do you exactly mean with “$xml is blank”; BTW, to print out XML from SimpleXML you can use this syntax:

echo $xml->asXML();