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Thread: Retrieving xml document with cURL

  1. #1
    Join Date
    Aug 2010
    Posts
    8

    Retrieving xml document with cURL

    Why do I only get the values of the returning xml document instead of the whole deal (tags, headers) that make up the document?

    Code:
    <?php
        function do_post_request($url, $data, $optional_headers = null)
        {
            $ch = curl_init();
        
            curl_setopt($ch,CURLOPT_URL,$url);
            curl_setopt($ch,CURLOPT_POST,8);
            curl_setopt($ch,CURLOPT_POSTFIELDS,$data);
            
            $result = curl_exec($ch);
            
            curl_close($ch);
        }
    ?>
        <?php
            $response = do_post_request("https://testgreidslugatt.valitor.is/greidslugatt.asmx/FramkvaemaAdgerd","Notandanafn=visatest&Lykilord=visatest123&PosiId=5&Adgerd=NETGREIDSLA&KortaUpplysingar=9999999999999999-1411&SidustuFjorirIKortnumeri=1234&Oryggisnumer=123&ChipGogn=&Faerslunumer=&Upphaed=100&Stillingar=");
            echo($response);
    
        ?>
    I know that the server at this address returns the values wrapped up in a xml document since that is what I get when I perform html form request, why does $response only contain the values seperated by a whitespace? I want the whole xml document returned so I can parse it.

  2. #2
    Join Date
    Aug 2004
    Location
    Ankh-Morpork
    Posts
    19,252
    I suspect the markup is there, if you do a right-click -> "view source" of the output. However, that output is being generated by the curl_exec(), not from your echo, since (a) you did not set the CURLOPT_RETURNTRANSFER option, and (b) after doing that you then need to actually return the result from your function.
    PHP Code:
    <?php
    function do_post_request($url$data$optional_headers null)
    {
       
    $ch curl_init();
       
    curl_setopt($chCURLOPT_URL$url);
       
    curl_setopt($chCURLOPT_POST8);
       
    curl_setopt($chCURLOPT_POSTFIELDS$data);
       
    curl_setopt($chCURLOPT_RETURNTRANSFERtrue); // <----------<<<<<<<
       
    $result curl_exec($ch);
       
    curl_close($ch);
       return 
    $result;   // <------------<<<<<<<<
    }

    $response do_post_request(
       
    "https://testgreidslugatt.valitor.is/greidslugatt.asmx/FramkvaemaAdgerd",
       
    "Notandanafn=visatest&Lykilord=visatest123&PosiId=5&Adgerd=NETGREIDSLA&KortaUpplysingar=9999999999999999-1411&SidustuFjorirIKortnumeri=1234&Oryggisnumer=123&ChipGogn=&Faerslunumer=&Upphaed=100&Stillingar="
    );
    // If you want to see the markup in this output, instead of this...
    // echo ($response);
    // ...do this:
    echo "<pre>".htmlspecialchars($response)."</pre>";
    ?>
    "Please give us a simple answer, so that we don't have to think, because if we think, we might find answers that don't fit the way we want the world to be."
    ~ Terry Pratchett in Nation

    eBookworm.us

  3. #3
    Join Date
    Aug 2010
    Posts
    8
    Yes, that was it
    Another problem is I'm trying to insert the string into simpleXML
    Code:
    $xml = new SimpleXMLElement($response)
    which fails because there is a whitespace infront of the <?xml tag, I've tried to use trim but it doesn't help :P

  4. #4
    Join Date
    Aug 2004
    Location
    Ankh-Morpork
    Posts
    19,252
    There might be a BOM (byte order mark) there. You could try something like:
    PHP Code:
    $response preg_replace('/^[^<]+/'''$response); 
    If I didn't make any typos, that should get rid of any characters preceding the first "<" character in the string.
    "Please give us a simple answer, so that we don't have to think, because if we think, we might find answers that don't fit the way we want the world to be."
    ~ Terry Pratchett in Nation

    eBookworm.us

  5. #5
    Join Date
    Aug 2010
    Posts
    8
    Ok I've fixed it, all is well, for now, thank you for you help

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