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Asked: 2026-05-11T08:44:45+00:00

I am using JSON to parse data and connect to a PHP file. I

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I am using JSON to parse data and connect to a PHP file. I am not sure what the problem is because I am a newbie to flex. This is the error I am receiving:

JSONParseError: Unexpected < encountered     at com.adobe.serialization.json::JSONTokenizer/parseError()     at com.adobe.serialization.json::JSONTokenizer/getNextToken()     at com.adobe.serialization.json::JSONDecoder/nextToken()     at com.adobe.serialization.json::JSONDecoder()     at com.adobe.serialization.json::JSON$/decode()     at DressBuilder2/getPHPData()     at DressBuilder2/__getData_result()     at flash.events::EventDispatcher/dispatchEventFunction()     at flash.events::EventDispatcher/dispatchEvent()     at mx.rpc.http.mxml::HTTPService/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()     at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::resultHandler()     at mx.rpc::Responder/result()     at mx.rpc::AsyncRequest/acknowledge()     at DirectHTTPMessageResponder/completeHandler()     at flash.events::EventDispatcher/dispatchEventFunction()     at flash.events::EventDispatcher/dispatchEvent()     at flash.net::URLLoader/onComplete()

Here is the actual mxml code:

<?xml version='1.0' encoding='utf-8'?> <mx:Application xmlns:mx='http://www.adobe.com/2006/mxml' layout='absolute'  width='535' height='345'> <mx:Script> <![CDATA[  import mx.events.DataGridEvent;  import mx.controls.TextInput;  import mx.rpc.events.ResultEvent;  import mx.collections.ArrayCollection;  import com.adobe.serialization.json.JSON;   [Bindable]  private var dataArray:ArrayCollection;   private function initDataGrid():void  {    dataArray = new ArrayCollection();    getData.send();  }   private function getPHPData(event:ResultEvent):void  {    var rawArray:Array;    var rawData:String = String(event.result);    rawArray = JSON.decode(rawData) as Array;    dataArray = new ArrayCollection(rawArray);  }   private function sendPHPData():void  {    var objSend:Object = new Object();    var dataString:String = JSON.encode(dataArray.toArray());    dataString = escape(dataString);    objSend.setTutorials = 'true';    objSend.jsonSendData = dataString;    sendData.send(objSend);  }   private function updatedPHPDataResult(event:ResultEvent):void  {    lblStatus.text = String(event.result);  }   private function checkRating(event:DataGridEvent):void  {    var txtIn:TextInput = TextInput(event.currentTarget.itemEditorInstance);    var curValue:Number = Number(txtIn.text);    if(isNaN(curValue) || curValue < 0 || curValue > 10)    {      event.preventDefault();      lblStatus.text = 'Please enter a number rating between 0 and 10';    }   } ]]> </mx:Script>  <mx:HTTPService id='getData' url='http://www.keishalexie.com/imd465/forum.php'  useProxy='false' method='GET' resultFormat='text'  result='getPHPData(event)'> <mx:request xmlns=''>   <getTutorials>'true'</getTutorials>   </mx:request> </mx:HTTPService> <mx:HTTPService id='sendData' url='http://www.keishalexie.com/imd465/forum.php'  useProxy='false' method='GET' resultFormat='text'  result='updatedPHPDataResult(event)'> </mx:HTTPService> <mx:Binding source='dgData.dataProvider as ArrayCollection'  destination='dataArray'/> <mx:Panel x='0' y='0' width='535' height='345' layout='absolute'  title='Forum'>   <mx:DataGrid id='dgData' x='10' y='10' width='495' height='241'    dataProvider='{dataArray}' creationComplete='{initDataGrid()}'    editable='true' itemEditEnd='{checkRating(event)}'>     <mx:columns>     <mx:DataGridColumn headerText='Name' dataField='name' editable='false'/>     <mx:DataGridColumn headerText='Author' dataField='author' width='115'        editable='false'/>     <mx:DataGridColumn headerText='Rating' dataField='rating' width='50'        editable='true' />   </mx:columns>   </mx:DataGrid>  <mx:Button x='10' y='259' label='UpdateDatabase' id='butUpdate'    click='{sendPHPData()}'/>    <mx:Label x='140' y='261' id='lblStatus'/>  </mx:Panel>  </mx:Application>

Here is the PHP:

<?php   $USERNAME = '';   //database username   $PASSWORD = '';    //database password   $DATABASE = '';   //database name   $URL = '';        //database location    if(isset($_GET['getTutorials'])) {     mysql_connect($URL, $USERNAME, $PASSWORD);     mysql_select_db($DATABASE) or die('Cannot connect to database.');      $returnArray = array();      $query = 'SELECT * FROM Tutorials';     $result = mysql_query($query);      while($row = mysql_fetch_assoc($result)) {       array_push($returnArray, $row);     }      mysql_close();     echo json_encode($returnArray);   }   elseif(isset($_GET['setTutorials'])) {      $jsonString = urldecode($_GET['jsonSendData']);      $jsonString = str_replace('\\', '', $jsonString);      $data = json_decode($jsonString, true);       mysql_connect($URL, $USERNAME, $PASSWORD);      mysql_select_db($DATABASE) or die('Cannot connect to database.');       foreach ($data as $tutorialEntry) {        $query = sprintf(         'UPDATE Tutorials SET rating = '%s' WHERE id = '%s'',        mysql_real_escape_string($tutorialEntry['rating']),        mysql_real_escape_string($tutorialEntry['id']));         $result = mysql_query($query);         if(!$result) {          mysql_close();          echo mysql_error();          return;        }      }       mysql_close();      echo 'database updated';    } ?>
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1 Answer

  1. Visiting http://www.keishalexie.com/imd465/forum.php?getTutorials=1 (Which is what your code is calling) returns

    Fatal error: Call to undefined function: json_encode() in /homepages/38/d177816689/htdocs/keishalexie/imd465/forum.php on line 23

    Which is not a json document.

    Visit http://www.keishalexie.com/imd465/forum.php?getTutorials=1 in your browser as you fix the problem. Then once it looks good there, start working on the FLEX side of things.

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