How would I create a cookie that would store the randomly added body class for one browser session or for one day. My intention would be to randomly give every user a body background image and then store that image so that it won't change every pagereload or when they go to page 2.
Site http://www.midnightlisteners.com/
i am using this jQuery plugIn: https://github.com/carhartl/jquery-cookie
but it does not work somehow
My jQuery code:
the code that I use:
if($.cookie('userBackground') === null) {
var classes = ['body-bg1','body-bg2', 'body-bg3', 'body-bg4'];
var randomnumber = Math.floor(Math.random()*classes.length);
var chosenClass = classes[randomnumber];
$('body').addClass(chosenClass );
$.cookie('userBackground', chosenClass, { expires: 7, path: '/' });
} else {
//todo verify cookie value is valid
$('body').addClass($.cookie('userBackground'));
}
Errors i am getting:
Uncaught ReferenceError: require is not defined
Uncaught TypeError: Object function (a,b){return new e.fn.init(a,b,h)} has no method 'cookie'
Are there other ways to do this? php? pure javascript?
UPDATE:
If you want to make it only last the length of the session then just use the session instead:
<?php
if(!isset($_SESSION['bgclass'])) {
// lets make our cookie!
$classes = array('body-bg1','body-bg2', 'body-bg3', 'body-bg4');
$classIndex = array_rand($classes);
$_SESSION['bgclass'] = $classes[$classIndex];
}
$bgclass = $_SESSION['bgclass'];
?>
This way after the session times out or the browser is closed the user will get a new bgclass value.
If you already have php running i would do it that way. Much better to handle this server side if you can. Its also a bit simpler:
<?php
if(!isset($_COOKIE['bgclass'])) {
// lets make our cookie!
$classes = array('body-bg1','body-bg2', 'body-bg3', 'body-bg4');
$expire = time()+(60*60*24); // expire 1 day form now
$classIndex = array_rand($classes);
$bgclass = $classes[$classIndex]; // had $class here as opposed to $classes
setcookie('bgclass', $bgclass, $expire);
} else {
$bgclass = $_COOKIE['bgclass'];
}
?>
<html>
<head></head>
<body class="<?php echo $bgclass ?>">
...
</body>
</html>
The key thing to remeber is that a cookie is essentially a response header so you have to do this before headers have been sent (ie. anything from php is output to the browser).
Related
I'm hosted with Smarthosting, they used cloud based hosting which delivers faster loading times - great!
But I have a snag.
I'm setting some sessions via PHP in a seperate file...
<?php
session_start();
if(filter_var($_POST['question_1'], FILTER_VALIDATE_INT)) {
$_SESSION['question_1'] = addslashes($_POST['question_1']);
}
if(filter_var($_POST['question_2a'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2a'] = addslashes($_POST['question_2a']);
}
if(filter_var($_POST['question_2b'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2b'] = addslashes($_POST['question_2b']);
}
if(filter_var($_POST['question_2c'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2c'] = addslashes($_POST['question_2c']);
}
if(filter_var($_POST['question_2d'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2d'] = addslashes($_POST['question_2d']);
}
if(filter_var($_POST['question_2e'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2e'] = addslashes($_POST['question_2e']);
}
if(filter_var($_POST['question_2f'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2f'] = addslashes($_POST['question_2f']);
}
if(filter_var($_POST['question_2g'], FILTER_VALIDATE_INT)) {
$_SESSION['question_2g'] = addslashes($_POST['question_2g']);
}
?>
Then later on I access another PHP file which puts these into a JSON string...
<?php
session_start();
echo json_encode($_SESSION);
?>
This works fine, however, until I call the JSON via Ajax...
$.getJSON( "retrieve-variables.php", function( data ) {
var items = [];
...etc....
});
It's not pulling the most recent session data, it seems to pull back the session data from previous attempts. Is this to do with the cloud hosting? Or some other issue? Is there a way I can disable caching for this particular file and/or entire directory?
Thanks for listening.
EDIT: If I access the PHP retrieval file directly, then hard refresh it (CTRL+F5), and then go through the form again, it will ignore the answers I've selected and enter the data for that hard refresh I did
I found out how to fix this, in case anyone stumbles upon this post.
I simple added cache:"false" to the ajax get request.
I have a problem with the Mobile Detection Script.
There are two scenarios:
First the script should detect if it's a mobile or not. If mobile, than redirect to another page (this works fine).
The second query should determine, if the person is on the root page or not. If it's not the root page, the layout should be the classic one. (no redirection)
But when I add this line there won't be anymore redirection, even if I open the root page on a mobile.
I also tried to destroy the session on the google_mobile.php (redirected page) and set the $_SESSION['layoutType'] = 'mobile', but anyway the session is set to classic when I open the root page.
Thanks for your help!
Here is the script:
session_start();
require_once 'Mobile_Detect.php';
function layoutTypes() {
return array('classic', 'mobile');
}
function initLayoutType() {
// Safety check.
if (!class_exists('Mobile_Detect'))
return 'classic';
$detect = new Mobile_Detect;
$isMobile = $detect->isMobile();
$layoutTypes = layoutTypes();
// Set the layout type.
if (isset($_GET['layoutType'])) {
$layoutType = $_GET['layoutType'];
} else {
if (empty($_SESSION['layoutType'])) {
$layoutType = ($isMobile ? 'mobile' : 'classic');
} else {
$layoutType = $_SESSION['layoutType'];
}
//check if it's the root page
if ($_SERVER['REQUEST_URI'] != "/")
$layoutType = 'classic';
}
// Fallback. If everything fails choose classic layout.
if (!in_array($layoutType, $layoutTypes))
$layoutType = 'classic';
// Store the layout type for future use.
$_SESSION['layoutType'] = $layoutType;
return $layoutType;
}
$layoutType = initLayoutType();
if ($_SESSION['layoutType'] == 'mobile') {
header("Location: www.example.com/google_mobile.php");
exit;
}
I've tested your code, it seems to work as you described. I'd guess it is a session issue.
session_destroy() does not clear your previous session state in the immediate session. That means your $_SESSION would still be "dirty" in a script even if session_destroy() is the first line in it. It's safer to clear cookies from your browser instead.
One other possible problem would be query string. You're checking the REQUEST_URI and it includes any query string on URI. "/?foo=bar" is certainly not "/". You may want to check SCRIPT_NAME (i.e. $_SERVER['SCRIPT_NAME'] == 'index.php) instead.
I am new to PHP and even newer to SESSIONS
I am working with the Instagram API and I am successfully able to authorize an app, and redirect to a page to display content.
My main folder is called Monkey and it has a sub folder called Instagram.
MY callback url for instagram is success.php located in the instagram folder. When I successfully retrieve an access token from Instagram it redirects to the index file in the Monkey folder.
On my success page, I am creating an array full of data called instaArray. I am trying to pass the array from the success.php in the instagram folder, to the index.php in the monkey folder.
My redirect is simply
header( 'Location: ../index.php' );
Because I am new with sessions, I guess I am doing something wrong. I figured it was straight forward, but I suppose not ha.
On the success.php page, after I build the array I have this
session_start();
$_SESSION['instagram'] = $instaArray;
I thought that should create a session that holds my array InstaArray.
Then, on the index.php page in Monkey, I have this
<?php
session_start();
$get_instagram = $_SESSION['instagram'];
print_r($get_instagram);
?>
But absolutely nothing happens. I've even tried to set the session instagram to a simple numerical value or 1, $_SESSION['instagram'] = 1; and get that on the index page, and it doesn't work either.
Am I doing something horribly, terribly wrong? I've read up on sessions, but because it's new, it's still a little confusing.
Thanks for the help, and I hope I was able to explain everything properly.
EDIT: Here is my success.php page in full
<?php
require 'src/db.php';
require 'src/instagram.class.php';
require 'src/instagram.config.php';
// Receive OAuth code parameter
$code = $_GET['code'];
// Check whether the user has granted access
if (true === isset($code)) {
// Receive OAuth token object
$data = $instagram->getOAuthToken($code);
// Take a look at the API response
$username = $data->user->username;
$fullname = $data->user->full_name;
$id = $data->user->id;
$token = $data->access_token;
$user_id = mysql_query("select instagram_id from users where instagram_id='$id'");
if(mysql_num_rows($user_id) == 0) {
mysql_query("insert into users(instagram_username,instagram_name,instagram_id,instagram_access_token) values('$username','$fullname','$id','$token')");
}
//Set Cookie
$Month = 2592000 + time();
setcookie(instagram, $id, $Month);
// Set user access token
$instagram->setAccessToken($token);
// Retrive Data
$instaData = $instagram->getUserFeed();
// Create Instagram Array
$instaArray = array();
$count = 0;
// For each Instagram Post
foreach ($instaData->data as $post) {
$instaArray[$count]['post_id'] = $post->id;
$instaArray[$count]['name'] = $post->user->username;
$instaArray[$count]['profile_img'] = $post->user->profile-picture;
$instaArray[$count]['img_url'] = $post->images->standard_resolution->url;
$instaArray[$count]['caption'] = $post->caption->text;
$instaArray[$count]['like_count'] = $post->likes->count;
$instaArray[$count]['comment_count'] = $post->comments->count;
$instaArray[$count]['created_time'] = $post->created_time; //Unix Format
$count++;
}
// Start Session For Array
session_start();
$_SESSION['instagram'] = serialize($instaArray);
header( 'Location: ../index.php' ) ;
} else {
// Check whether an error occurred
if (true === isset($_GET['error'])) {
echo 'An error occurred: '.$_GET['error_description'];
}
}
?>
Why not use an ID and then cookies rather than sessions + data (which are usually store on the server in text files in a temporary directory)? And keep all data within a database than allow the client to be accessible to the data. Sessions are also temporary.
Note, do you know if you have "globals" on?!
"Please note when working with sessions that a record of a session is not created until a variable has been registered using the session_register() function or by adding a new key to the $_SESSION superglobal array. This holds true regardless of if a session has been started using the session_start() function."
Reference:
http://www.php.net/manual/en/function.session-register.php
make session_start() first line after php
<?php
session_start();
and remove it from anywhere ele on page.
session_start() should be your first line in index.php also as in success.php
Note: The session_start() function must appear BEFORE the tag:
REF : http://www.w3schools.com/php/php_sessions.asp
I think you need to unserialize() your array in index.php.
$get_instagram = unserialize($_SESSION['instagram']);
I'm working on a simple Ajax exercise where I separate the query, the Ajax, and the url that Ajax calls. In short, I run a query in one page and attach the resulting array to $_SESSION, then I display some html and the Ajax code calls a third page to get the elements from the array one by one via a counter attached to the $_GET superglobal. The three files are linked by require_once().
When the page loads initially, all is as expected. The $_SESSION contains the entire array pulled from MySQL, and the $_GET is null.
Once I click on the button to execute the Ajax code, the $_GET value changes and receives the value of the counter, as expected.
However, $_SESSION ceases to exist. The var_dump now returns null and I get an error Notice: Undefined variable: _SESSION in C:\wamp\www\.....\ajax.php. I don't understand why that is.
Here is my code. First, index.php :
<?php
session_start();
$dbhost = "localhost";
$dbuser = "admin";
$dbpass = "XXXXXXX";
$dbname = "test";
mysql_connect($dbhost, $dbuser, $dbpass);
mysql_select_db($dbname) or die(mysql_error());
$query = "SELECT ae_name FROM ajax_example";
$qry_result = mysql_query($query) or die(mysql_error());
$result;
while($row = mysql_fetch_array($qry_result,MYSQL_ASSOC)){
$result[]=$row;
}
$_SESSION['array']=$result;
require_once ("viewUsers.php");
require_once ("ajax.php");
?>
Then the html and ajax code in viewUsers.php:
<html>
<body>
<script type="text/javascript">
<!--
function createRequest() {
try {
request = new XMLHttpRequest();
} catch (tryMS) {
try {
request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (otherMS) {
try {
request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (failed) {
request = null;
}
}
}
return request;
}
var indx=0;
function calcIndex(){
return indx++;
}
function ajax(){
ajaxRequest = createRequest();
var index=calcIndex();
var url="ajax.php?index=" + index;
ajaxRequest.open("GET",url, true);
ajaxRequest.onreadystatechange = display;
ajaxRequest.send(null);
}
function display(){
if(ajaxRequest.readyState == 4){
var ajaxDisplay = document.getElementById('ajaxDiv');
ajaxDisplay.innerHTML = ajaxRequest.responseText;
}
}
//-->
</script>
<form name='myForm'>
<input type='button' onclick='ajax()' value='Show next name' />
</form>
<div id='ajaxDiv'>Your result will be displayed here</div>
</body>
</html>
And then the PHP that receives the array from $_SESSION and (should) return the next item based on the value of $_GET['index']. The file is ajax.php.
<?php
var_dump('Get value in ajax.php',$_GET); // The values are as expected
var_dump('Session value in ajax.php',$_SESSION); // This global cease to exist after I click the button
if(isset($_SESSION['array'])){
$array=$_SESSION['array'];
$cnt=count($array);
$index=null;
if(isset($_GET['index'])){
$index=$_GET['index'];
if($index>=$cnt){
$str="And that's it....";
}else{
$str="The next name is ".$array[$index]['ae_name'];
}
echo $str;
}
}
?>
The problem is that session in ajax.php is not started / resumed.
When you call index.php, it is:
index.php -> .. -> ajax.php (SESSION EXISTS (session_start() called in index.php))
then you request your ajax.php through ajax:
html -> ajax.php (SESSION DOESNT EXISTS (session_start() was not ever called as we dont come from index.php))
You just need to initialize / resume session in your ajax.php, but you have to check if its not already initialized from index.php. Put this chunk of code into your ajax.php file:
if(!session_id()) // check if we have session_start() called
session_start(); // if not, call it
ajax.php needs a session_start() at the beginning, otherwise, when you call it standalone via ajax, you won't have a session, hence no $_SESSION var.
From PHP DOC
session_start() creates a session or resumes the current one based on a session identifier passed via a GET or POST request, or passed via a cookie.
When session_start() is called or when a session auto starts, PHP will call the open and read session save handlers. These will either be a built-in save handler provided by default or by PHP extensions (such as SQLite or Memcached); or can be custom handler as defined by session_set_save_handler(). The read callback will retrieve any existing session data (stored in a special serialized format) and will be unserialized and used to automatically populate the $_SESSION superglobal when the read callback returns the saved session data back to PHP session handling.
Without calling session_start definitely $_SESSION would not be populated accordingly why advice is to always call session_start if you in your script if you are going to be using sessions .
Quick Few steps
Remove require_once ("ajax.php"); from index.php its not needed there
PHP CODE
$_SESSION['array']=$result;
require_once ("viewUsers.php");
require_once ("ajax.php"); //<------ remove this
Add session_start(); to ajax.php
From PHP DOC on mysql_query
Use of this extension is discouraged. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:mysqli_query()
PDO::query()
Your index.php should finally look like this
session_start();
// Put this in config file
$dbhost = "localhost";
$dbuser = "admin";
$dbpass = "XXXXXXX";
$dbname = "test";
$array = array();
//Start DB Connection
$mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
$query = "SELECT ae_name FROM ajax_example";
$result = $mysqli->query($query);
//Get Information
while ( $row = $result->fetch_assoc() ) {
$array[] = $row;
}
$result->free();
$mysqli->close();
// Add Info to session
$_SESSION['array'] = $array;
require_once ("viewUsers.php");
#JDelage,
Your question has a very simple solution - Just add session_start() at the top of the ajax.php file.
However, the major problem here is lack of organization in your code structure.
Session / Configurations are preloaded in most of the actions. And these are included in a file which is loaded in every call.
Your file ajax.php apparently seems to be an independent file, however is dependent upon index.php, meanwhile index.php depends on ajax.php (require_once).
So the best work around for your type of code is as follows.
bootstrap.php
<?php
// just to check to prevent overwriting of your configs / preloads.
if(!defined("INITIALIZED")){
session_start();
//.. some other basic settings if you require
define("INITIALIZED", 1);
}
?>
index.php
<?php
include_once "bootstrap.php";
// .. your code
require_once("viewUsers.php");
require_once("ajax.php");
ajax.php (Yes you need session_start() here, because when you make asynchronous request to this file, it acts as an independent request regardless of index.php. AJAX call is a client side asynchronous request, not a server side. )
<?php
include_once 'bootstrap.php';
// .. your code
viewUsers.php
// since your viewUsers.php file isn't an independent file and is included by index.php only, you can simply add this line at the top to prevent direct invocation of the file.
<?php
if(!defined("INITIALIZED")){die();}
PS:
There isn't an unique solution. An approach is what you have to decide. Your approach is an approach, which isn't any kind of approach. Rest is fine.
I hope I have answered your queries.
Regards,
You have a number of if conditions that are making it difficult for you to see errors. Add some echo statements at those locations to see what is happening in your program flow. It will be easier to troubleshoot. For example:
<?php
//session_start();
echo 'You sent ' . $_GET['index'] . '<br>'; //Ensure index value arriving
if(isset($_SESSION['array'])){
$array=$_SESSION['array'];
$cnt=count($array);
$index=null;
if(isset($_GET['index'])){
$index=$_GET['index'];
echo 'Got to here<br>'; //Another checkpoint - send something back
if($index>=$cnt){
$str="And that's it....";
}else{
$str="The next name is ".$array[$index]['ae_name'];
}
echo $str;
}else{
echo 'GET var "index" was not set<br>';
}
}else{
echo 'SESSION var "array" was not set<br>';
}
?>
Of course, you will remove those echo statements as you fix your code... They are only temporary, for debugging.
I faced similar issue. I found that in one of the ajax call I forgot to call session_start().
when I ensured that I session_start() is always called in all the php code that are called thru ajax, then this problem went away.
When using AJAX sometimes the session is not carried over. In your AJAX post/get include the sessionID. Then on the receiving end do something like:
$sid = ($_POST['sid']) ? $_POST['sid'] : ''; //Check for posted session ID
session_start($sid); //Start session using posted ID or start new session
*Old-school method, yes, but tried and true.
I have a program that prints reports for a user id list. The program is supposed to print reports one by one for users on the list uploaded. The problem is that when I was running the printing process and getting to print the report with indexInList=30, I got error:
This webpage has a redirect loop
The webpage at http://127.0.0.1/content/8520?print=1&bulkprinting=1&filename=/private/var/tmp/phpHRXEw8.moved&indexInList=30&nopeergroup=1&nolabpage=0&hideScreeningOnly=1&showOnlyScreening=0&hideHoldMailing=1 has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer.
I tried to clean the cookie but still keep getting the same error.
I attached some code here and hope anyone can help me:
$sessionData['first_name'] = $foundUser->first_name;
$sessionData['last_name'] = $foundUser->last_name;
// Overwrite $_REQUEST variable with parameters before including
// the hpa report
$_REQUEST = array(
'user_id' => $foundUser->id,
'bulkprinting' => true
);
if($nopeergroup) { $_REQUEST['nopeergroup'] = $nopeergroup; }
if($nolabpage) { $_REQUEST['nolabpage'] = $nolabpage; }
if($hideScreeningOnly) { $_REQUEST['hideScreeningOnly'] = $hideScreeningOnly; }
if($showOnlyScreening) { $_REQUEST['showOnlyScreening'] = $showOnlyScreening; }
if($hideHoldMailing) { $_REQUEST['hideHoldMailing'] = $hideHoldMailing; }
$includeValue = include __DIR__.'/../hpa/hpa.php';
$url = sprintf(
"/content/8520?print=1&bulkprinting=1&filename=%s&indexInList=%s" .
"&nopeergroup=%s&nolabpage=%s&hideScreeningOnly=%s" .
"&showOnlyScreening=%s&hideHoldMailing=%s",
$filename, $indexInList, (int)$nopeergroup, (int)$nolabpage,
(int)$hideScreeningOnly, (int)$showOnlyScreening, (int)$hideHoldMailing);
if($hradata[0] !== false) {
$sessionData['hra_id'] = $hradata[0]['id'];
}
if($screeningdata[0] !== false) {
$sessionData['screening_id'] = $screeningdata[0]['id'];
}
if($includeValue !== 1) {
// Redirect to URL
$sessionData['message'] = $messages_set[$includeValue];
$_SESSION['printing_set'][] = $sessionData;
redirect($url);
}
$sessionData['markAsMailed'] = true;
$_SESSION['printing_set'][] = $sessionData;
?>
<script type="text/javascript">
function waitPrint() {
window.print();
var t = setTimeout("timed()", 1000);
}
function timed() {
window.location.replace("<?php echo $url ?>");
}
if(window.attachEvent) {
window.attachEvent("onload", waitPrint);
} else if(window.addEventListener) {
window.addEventListener("load", waitPrint, false);
}
</script>
Sounds like you have a lot of files that need printing!
You may be able to alter your browser settings (I seem to remember you can in Firefox) to allow more than 30 loops.
Alternatively, you could always limit your code to 30 loops then wait for further user interaction to proceed to the next 30.
The 3rd option is to always create a Word document or PDF with one report on each page, then save the file and print it - a little more hassle (in a way) but at least you'll be able to print everything at once.
In order for $includeValue to be set to anything, the file __DIR__.'/../hpa/hpa.php' must have a return statement inside of it, as demonstrated in the PHP documentation for include, example 5. include will only return a value when called if the included file returns a value.
If your script still produces an infinite loop, your logic within the included file is incorrect and it is consistently producing a value that is not 1.
Essentially, here is the code that your question boils down to:
$includeValue = include __DIR__.'/../hpa/hpa.php';
if($includeValue !== 1) {
// Redirect
}
Browsers have checks built-in to help you when sites are misconfigured into a redirection loop, and 30 must be the limit for the browser you're using. You've built a redirection loop on purpose, but the browser doesn't know that. Instead of using the window.location.replace() method, how about a form that automatically submits? That should look different to the browser, and allow your loop to progress as designed.
<script type="text/javascript">
function waitPrint() {
window.print();
var t = setTimeout("timed()", 1000);
}
function timed() {
window.reloadForm.submit();
}
if(window.attachEvent) {
window.attachEvent("onload", waitPrint);
} else if(window.addEventListener) {
window.addEventListener("load", waitPrint, false);
}
</script>
<form name="reloadForm" action="<?php echo $url ?>">
</form>