When XML parsing special characters - my specific issue is with ampersands - Excel VBA is throwing the error
Run time error 91: Object variable or With block variable not set
PHP code for XML Parsing:
$xml = '<?xml version="1.0" encoding="UTF-8" ?>
<root> <EngineerFName>'.$engineer_fname.'</EngineerFName>
<CustomerName>'.$customer_name.'</CustomerName>
<EngineerLName>'.$engineer_lname.'</EngineerLName>
<TopName>'.$dt_top_name.'</TopName>
</root>';
Excel Vba code:
Dim XDoc1 As Object
Dim XHTML1 As IHTMLElement
Dim XURL1 As String
Dim CustomerName1 As String
Set XDoc1 = CreateObject("MSXML2.DOMDocument")
XDoc1.async = False: XDoc1.validateOnParse = False
XDoc1.Load ("http://www.beamon.com/windows_application/macro2.php" + "?Id=" + Sheets(1).Range("D2"))
Set lists = XDoc1.DocumentElement
Set getFirstChild = lists.FirstChild
Set getCustomerName1 = lists.ChildNodes(1)
Set getEnglname = lists.ChildNodes(2)
Set getTopCustomer = lists.ChildNodes(3)
Sheets(1).Range("T5") = getCustomerName1.text
Sheets(1).Range("T6") = getFirstChild.text & Space(1) & getEnglname.text
Sheets(1).Range("T7") = getTopCustomer.text
Set XDoc1 = Nothing
Can anyone suggest a solution?
There's a good article on your problem at Techrepublic - quoting the necessary part:
When the XML parser finds an ampersand in the XML data, it expects to find a symbol name and a semicolon following it. The symbol name provides a symbolic reference to another entity or character such as the ampersand, greater-than, and less-than characters. The symbolic name for greater-than is gt and for less-than is lt. To include a greater-than character in the XML data, you must use the following syntax: >
If you already had the response from the PHP page then the solution to your problem is simply to do this:
strXml = VBA.Replace(strXml, "&", "&")
But your issue is that you are using the Load method of the DOMDocument class and the PHP is emitting invalid XML. The PHP page should do this encoding for you - my guess is that it just queries some data store and slots it into an XML string an echos it without doing any validation on the values. Your Load method will not error, but the moment you want to parse the DOM, you get the problem.
Given you are already referencing the MSXML library, perhaps your option is to use the XMLHTTP class to get the response, do the replacement yourself, and then load it the DOMDocument using the LoadXML method. See the code below - it is not tested as I don't know the parameter for your URL:
Option Explicit
Sub TextXMLGetAndParse()
Dim strUrl As String
Dim objXhr As MSXML2.XMLHTTP
Dim strXml As String
Dim objXmlDoc As MSXML2.DOMDocument
Set objXhr = New MSXML2.XMLHTTP
Set objXmlDoc = New MSXML2.DOMDocument
' do a XHR GET to your URL
strUrl = "http://www.beamon.com/windows_application/macro2.php" + "?Id=" + Sheets(1).Range("D2")
With objXhr
.Open "GET", strUrl, False
.send
strXml = .responseXML
End With
' do the clean-up that the PHP page should do for you
strXml = VBA.Replace(strXml, "&", "&")
' load that XML to you DOMDOcument
objXmlDoc.LoadXML strXml
' check values
Debug.Print objXmlDoc.DocumentElement.Text
Debug.Print objXmlDoc.DocumentElement.FirstChild.Text
Debug.Print objXmlDoc.DocumentElement.ChildNodes(1).Text
Debug.Print objXmlDoc.DocumentElement.ChildNodes(2).Text
Debug.Print objXmlDoc.DocumentElement.ChildNodes(3).Text
' clean up
Set objXhr = Nothing
Set objXhr = Nothing
End Sub
I have a problem (server side) when i encrypt data from a client and i send to webserver with Post Method.
i Use this Method to Encrypt from a C# Client
public string Encrypt3DES(string strString)
{
DESCryptoServiceProvider DES = new DESCryptoServiceProvider();
DES.Key = Encoding.GetBytes(this.Key);
DES.Mode = CipherMode.ECB;
DES.Padding = PaddingMode.Zeros;
ICryptoTransform DESEncrypt = DES.CreateEncryptor();
byte[] Buffer = encoding.GetBytes(strString);
return Convert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
}
When i send ecrypted String to PHP if there was a + in that string, php read it with a blank space. If instead there'isnt any '+' i haven't any problem.
For Example this is a Encrypted String 4aY+na42iaPg+aep== in C# when i read in php it's
4aY a42iaPg aep== so if i decrypt if dont match with the correct word.
i use this script to start read method post
if (isset($_POST['doConvalid'])){
if ($_POST['doConvalid']=='Convalid')
{
foreach($_POST as $keys => $values) {
$data[$keys] =($values); // post variables are filtered
}
$cheking=$data['check'];
echo("Show checking = $checking"); //Here i read string with blank space instead +
Is there a way to fix it?
Yes base64 decodes + to space use this:
echo str_replace(" ","+",$_POST['string']);
http://en.wikipedia.org/wiki/Base64#URL_applications
You could replace the '+' with a different character (something not used by base64) for sending. Then replace that character back to '+' for decoding.
I am writing a php program to write a binary file (may be video or image files). I would like to make it as a web service and call it from another application like c#, mac etc.
My code is give below,
<?php
$fileChunk = $_POST["filechunk"];
$vodFolder = 'D:\\HYSA SVN\\Trunk\\workproducts\\source\\hysa_he\\web\\entertainment\\';
$vodFile = $vodFolder . "abcd.mov";
$fh = fopen($vodFile, 'ab');
flock ($fh, LOCK_EX);
$varsize = fwrite($fh, $fileChunk);
fclose($fh);
?>
But when I called the php web service from a c# code, the abcd.mov is creating in the location, but its size is only one kb. I suspects that, the writing in halted when a character ‘&’ found in the binary file. I read the php documentation and found that, fopen with binary mode ‘b’ will solve this issue? But it is not working. Can somebody help me ?
This is my c# code.
BinaryReader b = new BinaryReader(File.Open("d:\\image38kb.jpg", FileMode.Open));
int pos = 0;
int length = (int)b.BaseStream.Length;
byte[] bt = b.ReadBytes(length);
char[] ch = b.ReadChars(length);
HttpWebRequest request = null;
Uri uri = new Uri("http://d0327/streamtest.php");
request = (HttpWebRequest)WebRequest.Create(uri);
NetworkCredential obj = new NetworkCredential("shihab.kb",
"India456*", "tvm");
request.Proxy.Credentials = obj;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = bt.Length;
using (Stream writeStream = request.GetRequestStream())
{
UTF8Encoding encoding = new UTF8Encoding();
byte[] bytes = encoding.GetBytes("filechunk=");
byte[] rv = new byte[bytes.Length + bt.Length];
System.Buffer.BlockCopy(bytes, 0, rv, 0, bytes.Length);
System.Buffer.BlockCopy(bt, 0, rv, bytes.Length, bt.Length);
writeStream.Write(rv, 0, bt.Length);
}
string result = string.Empty;
using (
HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
{
using (StreamReader readStream = new StreamReader(responseStream, Encoding.UTF8))
{
result = readStream.ReadToEnd();
}
}
}
Well the problem is not in the fwrite part, that works fine.
However, POST requests in HTTP look like this:
POST /somepage.php HTTP/1.1
Content-Length: 34
variable1=blah&var2=something else
As you can see, variables are divided by ampersands (&) (as well as equal signs (=) for the key - value mapping)... So, even when using POST requests, ampersands are not safe characters.
To solve this, you could try another transfer method, for example, TCP/IP socket connection, or simply escape the ampersands with, say '\x26' (the ASCII value of ampersand) and escape all the backslashes (\) with '\x5C'... You'd have to edit the PHP code to parse these values.
I'm writing an application that downloads an XML string from a URL and POSTs that to another URL (that's set up to handle an incoming "XML" field). I've got the first part right - it downloads the XML and I can alert() it and all that, but I'm unable to figure out how to POST that data to a server.
function pull() {
var myLoader = new air.URLLoader();
var myRequest = new air.URLRequest('http://something/something.xml');
myLoader.addEventListener(air.Event.COMPLETE, pulled);
myLoader.load(myRequest);
}
function pulled(evt) {
if (evt.target.bytesTotal>0) {
// alerting shows the full string just fine
alert(evt.target.data);
var myLoader = new air.URLLoader();
var myRequest = new air.URLRequest('http://someplace/push.php');
myRequest.method = air.URLRequestMethod.POST;
// myVars = new air.URLVariables("xml="+evt.target.data); //
// alert(evt.target.data.toUpperCase());
myRequest.data = "xml="+evt.target.data; // myVars;
myLoader.dataFormat = air.URLLoaderDataFormat.TEXT;
myLoader.addEventListener(air.Event.COMPLETE, pushed);
myLoader.load(myRequest);
}
}
I made the 2nd server PHP echo the contents of the xml variable, but I'm just unable to get the exact contents of the XML string. There is something I'm doing wring with the myRequest.data and/or dataFormat bit.
Can someone just figure this out? I know it's probably a simple thing, but I'm at my wit's end right now.
This is my first AIR app.
Another related question (or sub-question) is that...
alert(evt.target.data); // shows an alert box with the XML
alert(typeof evt.target.data); // shows String
alert(evt.target.data.toUpperCase()); // shows the xml converted to upper case
alert(encodeURI(evt.target.data)); // shows up blank.
alert(escape(evt.target.data)); // shows up blank.
Why??
The error seems to be the way you are assigning the parameters to 'data' ... Use URLVariables.
var params:URLVariables = new URLVariables();
params.[name of parameter] = [value];
--- so like params.xml = (YOUR XML) ... from your example:
// uses the dynamic object to add the 'xml' property to 'params' at runtime.
params.xml = evt.target.data
Then Change you request.data to request.data = params;
-- The URLVariables guy is dynamic - so you can add properties as I describe above.
For a basic example - much more complete that what I have here: http://livedocs.adobe.com/flex/3/html/help.html?content=data_access_2.html
This question already has answers here:
PHP json_decode() returns NULL with seemingly valid JSON?
(29 answers)
Closed 4 months ago.
There is a strange behaviour with json_encode and json_decode and I can't find a solution:
My php application calls a php web service. The webservice returns json that looks like this:
var_dump($foo):
string(62) "{"action":"set","user":"123123123123","status":"OK"}"
now I like to decode the json in my application:
$data = json_decode($foo, true)
but it returns NULL:
var_dump($data):
NULL
I use php5.
The Content-Type of the response from the webservice: "text/html; charset=utf-8" (also tried to use "application/json; charset=utf-8")
What could be the reason?
Well, i had a similar issue and the problems was the PHP magic quotes in the server... here is my solution:
if(get_magic_quotes_gpc()){
$param = stripslashes($_POST['param']);
}else{
$param = $_POST['param'];
}
$param = json_decode($param,true);
EDIT:
Just did some quick inspection of the string provided by the OP. The small "character" in front of the curly brace is a UTF-8 B(yte) O(rder) M(ark) 0xEF 0xBB 0xBF. I don't know why this byte sequence is displayed as here.
Essentially the system you aquire the data from sends it encoded in UTF-8 with a BOM preceding the data. You should remove the first three bytes from the string before you throw it into json_decode() (a substr($string, 3) will do).
string(62) "{"action":"set","user":"123123123123","status":"OK"}"
^
|
This is the UTF-8 BOM
As Kuroki Kaze discovered, this character surely is the reason why json_decode fails. The string in its given form is not correctly a JSON formated structure (see RFC 4627)
Print the last json error when debugging.
json_decode( $so, true, 9 );
$json_errors = array(
JSON_ERROR_NONE => 'No error has occurred',
JSON_ERROR_DEPTH => 'The maximum stack depth has been exceeded',
JSON_ERROR_CTRL_CHAR => 'Control character error, possibly incorrectly encoded',
JSON_ERROR_SYNTAX => 'Syntax error',
);
echo 'Last error : ', $json_errors[json_last_error()], PHP_EOL, PHP_EOL;
Also use the json.stringify() function to double check your JSON syntax.
None of the solutions above worked for me, but html_entity_decode($json_string) did the trick
Try this
$foo = utf8_encode($foo);
$data = json_decode($foo, true);
make sure that if you sent the data by POST / GET, the server has not escape the quotes
$my_array = json_decode(str_replace ('\"','"', $json_string), true);
"{"action":"set","user":"123123123123","status":"OK"}"
This little apostrophe in the beginning - what is it? First symbol after the doublequote.
I had the similar problem in a live site. In my local site it was working fine. For fixing the same I Just have added the below code
json_decode(stripslashes($_GET['arr']));
I just put this
$result = mb_convert_encoding($result,'UTF-8','UTF-8');
$result = json_decode($result);
and it's working
Yesterday I spent 2 hours on checking and fixing that error finally I found that in JSON string that I wanted to decode were '\' slashes. So the logical thing to do is to use stripslashes function or something similiar to different PL.
Of course the best way is sill to print this var out and see what it becomes after json_decode, if it is null you can also use json_last_error() function to determine the error it will return integer but here are those int described:
0 = JSON_ERROR_NONE
1 = JSON_ERROR_DEPTH
2 = JSON_ERROR_STATE_MISMATCH
3 = JSON_ERROR_CTRL_CHAR
4 = JSON_ERROR_SYNTAX
5 = JSON_ERROR_UTF8
In my case I got output of json_last_error() as number 4 so it is JSON_ERROR_SYNTAX. Then I went and take a look into the string it self which I wanted to convert and it had in last line:
'\'title\' error ...'
After that is really just an easy fix.
$json = json_decode(stripslashes($response));
if (json_last_error() == 0) { // you've got an object in $json}
I had such problem with storage json-string in MySQL.
Don't really know why, but using htmlspecialchars_decode berofe json_decode resolved problem.
Non of these solutions worked for me.
What DID eventually work was checking the string encoding by saving it to a local file and opening with Notepad++.
I found out it was 'UTF-16', so I was able to convert it this way:
$str = mb_convert_encoding($str,'UTF-8','UTF-16');
Maybe you use thing as $ ${: these chars should be quoted.
I was having this problem, when I was calling a soap method to obtain my data, and then return a json string, when I tried to do json_decode I just keep getting null.
Since I was using nusoap to do the soap call I tried to just return json string and now I could do a json_decode, since I really neaded to get my data with a SOAP call, what I did was add ob_start() before include nusoap, id did my call genereate json string, and then before returning my json string I did ob_end_clean(), and GOT MY PROBLEM FIXED :)
EXAMPLE
//HRT - SIGNED
//20130116
//verifica se um num assoc deco é valido
ob_start();
require('/nusoap.php');
$aResponse['SimpleIsMemberResult']['IsMember'] = FALSE;
if(!empty($iNumAssociadoTmp))
{
try
{
$client = new soapclientNusoap(PartnerService.svc?wsdl',
array(
// OPTS
'trace' => 0,
'exceptions' => false,
'cache_wsdl' => WSDL_CACHE_NONE
)
);
//MENSAGEM A ENVIAR
$sMensagem1 = '
<SimpleIsMember>
<request>
<CheckDigit>'.$iCheckDigitAssociado.'</CheckDigit>
<Country>Portugal</Country>
<MemberNumber">'.$iNumAssociadoDeco.'</MemberNumber>
</request>
</SimpleIsMember>';
$aResponse = $client->call('SimpleIsMember',$sMensagem1);
$aData = array('dados'=>$aResponse->xpto, 'success'=>$aResponse->example);
}
}
ob_end_clean();
return json_encode($aData);
I don't know Why?
But this work:
$out = curl_exec($curl);
$out = utf8_encode($out);
$out = str_replace("?", "", $out);
if (substr($out,1,1)!='{'){
$out = substr($out,3);
}
$arResult["questions"] = json_decode($out,true);
without utf8_encode() - Don't work
Check the encoding of your file. I was using netbeans and had to use iso windows 1252 encoding for an old project and netbeans was using this encoding since then for every new file. json_decode will then return NULL. Saving the file again with UTF-8 encoding solved the problem for me.
In Notepad++, select Encoding (from the top menu) and then ensure that "Encode in UTF-8" is selected.
This will display any characters that shouldn't be in your json that would cause json_decode to fail.
Try using json_encode on the string prior to using json_decode... idk if will work for you but it did for me... I'm using laravel 4 ajaxing through a route param.
$username = "{username: john}";
public function getAjaxSearchName($username)
{
$username = json_encode($username);
die(var_dump(json_decode($username, true)));
}
You should try out json_last_error_msg(). It will give you the error message and tell you what is wrong. It was introduced in PHP 5.5.
$foo = "{"action":"set","user":"123123123123","status":"OK"}";
$data = json_decode($foo, true);
if($data == null) {
throw new Exception('Decoding JSON failed with the following message: '
. json_last_error_msg());
}
// ... JSON decode was good => Let's use the data
Before applying PHP related solutions, validate your JSON format. That may be the problem. Try below online JSON format validator. If your JSON format is invalid, correct it first, because PHP doesn't decode invalid JSON strings.
https://jsonformatter.org/
Laravel specific answer:
I got the same issue in Laravel. And this did the trick for me
$result = json_decode($result->getContent(), true);
In my case, when I was printing to the screen, json was fine and I copied and decode with json_deocode() function. It was working fine. But, when I was trying to put jsonString directly in the function, it was returning null because quotes were coming like these ". So I used htmlspecialchars_decode() function and now it is working fine.
I am new here, so if I am making any mistakes in writing answer then sorry for that. I hope it'll help somebody.
Sometimes the problem is generated when the content is compressed, so adding the Accept-Encoding: identity header can solve the problem without having to wrangle with the response.
$opts = array(
'http' =>
array(
'header' =>
array(
'Accept-Encoding: identity',
),
),
);
$context = stream_context_create($opts);
$contents = file_get_contents('URL', false, $context);
i had a similar problem, got it to work after adding '' (single quotes) around the json_encode string. Following from my js file:
var myJsVar = <?php echo json_encode($var); ?> ; -------> NOT WORKING
var myJsVar = '<?php echo json_encode($var); ?>' ; -------> WORKING
just thought of posting it in case someone stumbles upon this post like me :)