Sessions and Ajax request?

V

valitskiydmitriy2015-11-29 12:51:00

PHP

valitskiydmitriy, 2015-11-29 12:51:00

DD. I use sessions in projects, I work with them for the first time, I need to transfer data from the form to the php script via ajax, but if I write ssesion start in the script file, the database entry does not occur, and if I remove it, the Undefined index.

Here are both files:

Extract from index

<?php

session_start();

if(!isset($_SESSION["session_username"])):
header("location:index.php");
else:
?>
<!DOCTYPE html>
<?php 
  include("includes/connection.php");
?>
     <?php if (!empty($message)) {echo "<p class=\"error\">" . "MESSAGE: ". $message . "</p>";} ?>
<!DOCTYPE html>
  <html class="home" lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link href="css/main.css" rel="stylesheet" type="text/css" />
    	<script src="js/jquery-2.1.4.js"></script>
    <script src="js/main.js"></script>
    <script type="text/javascript">
      $(function(){
         $("#send").click(function(){
            var title = $("#title").val();
            var color = $("#color").val();
            var project = $("#project").val();
            var shorttext = $("#shorttext").val();
            var task = $("#task").val();
            $.ajax({
               type: "POST",
               url: "includes/tasks.php",
               data: {"title": title, "color": color,"project": project,"shorttext": shorttext,"task": task},
               cache: false,
               success: function(response){
                   var messageResp = new Array('Ваше сообщение отправлено','Сообщение не отправлено Ошибка базы данных','Нельзя отправлять пустые сообщения');
                   var resultStat = messageResp[Number(response)];
                   if(response == 0){
                      $("#title").val("");
                      $("#shorttext").val("");
                      $("#color").val("");
                      $("#project").val("");
                      $("#task").val("");
                   }
                   $("#resp").text(resultStat).show().delay(1500).fadeOut(800);
                                                                     
                                                     }
                });
                return false;
                                                                     
          });
      });
    </script>

Receiver script:

<?php 
session_start();
var_dump($_SESSION,$_POST)
?>
<?php 
include("connection.php");
header("Content-type: text/html; charset=UTF-8");

//**********************************************
if(empty($_POST['js'])){
if($_POST['title'] != '' && $_POST['task'] != '' && $_POST['shorttext'] != '' && $_POST['color'] != '' && $_POST['project'] != ''){

$title = @iconv("UTF-8", $_POST['title']);
$title = addslashes($title);
$title = htmlspecialchars($title);
$title = stripslashes($title);
$title = mysql_real_escape_string($title);

$task = @iconv("UTF-8", $_POST['task']);
$task = addslashes($task);
$task = htmlspecialchars($task);
$task = stripslashes($task);
$task = mysql_real_escape_string($task);

$shorttext = @iconv("UTF-8", $_POST['shorttext']);
$shorttext = addslashes($shorttext);
$shorttext = htmlspecialchars($shorttext);
$shorttext = stripslashes($shorttext);
$shorttext = mysql_real_escape_string($shorttext);

$color = @iconv("UTF-8", $_POST['color']);
$color = addslashes($color);
$color = htmlspecialchars($color);
$color = stripslashes($color);
$color = mysql_real_escape_string($color);

$project = @iconv("UTF-8", $_POST['project']);
$project = addslashes($project);
$project = htmlspecialchars($project);
$project = stripslashes($project);
$project = mysql_real_escape_string($project);


$date = date("d-m-Y в H:i:s");
$result = mysql_query("INSERT INTO tasks (task, title, shorttext, color, project, date) VALUES ('$title', '$task', '$shorttext', '$color', '$project')");
if($result == true){
echo 0; //Ваше сообшение успешно отправлено
}else{
echo 1; //Сообщение не отправлено. Ошибка базы данных
}
}else{
echo 2; //Нельзя отправлять пустые сообщения
}
}

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1 answer(s)

S

Semyon, 2015-11-30
@skamenetskiy

Good afternoon!
In the handler, remove this code:

?>
<?php

Maybe this is not the problem, but session_start() will try to set cookies and then you call header(), if there was an output in the body before, there will be an error.