I want to check the useragent processor architecture either using PHP or JavaScript and then redirect the user to a domain according to the architecture they're using.
E.G.
if($Bits32){ //redirect to somewhere
} elseif($Bits64){ //redirect to somewhere
}
I tried using the following code but it didn't work correctly:
if (navigator.userAgent.indexOf("WOW64") != -1 ||
navigator.userAgent.indexOf("Win64") != -1 ){
document.write("This is a 64 bit OS"); // 64 bit action
} else {
document.write("<br><br>");
document.write("32 bit OS"); //32bit action
}
PHP Can't detect it as scripts runs on server-side. You can try with userAgent as you are trying now, but you have to remember that not everybody uses default full information, so there will always be examples of people on whom it doesn't work.
This could be helpful though it wont solve it completly.
http://blog.endflow.net/?p=285
tl;dr - look for more thatn WOW64 and Win64 ;) also as you can see different apss gives different UserAgents so like i told you - won't work for all.
Related
I have a very special problem and I don't know how to deal with it.
I have web App in Laravel, when i open index page, I receive text message to my mobile phone.
Problem is, sometimes I receive 2 messages or 3, sometimes 1.
Is there a tool how to debug this strange behavior which is not always the same?
A few words about my code:
user opens the page, and because its first visit Session doesn't have attribute message_sent and SendTextMessage::SendMessage($phoneNumber, $id_message, $smsCode, $newDateFormat); is executed. After that Session has message_sent and can't be sent again, for example if I refresh the page.
SendTextMessage::SendMessage() is Class in Laravel Helpers.
controller code:
public function index($url_attribute, $id_message, Request $request)
{
if(!Session::has('message_sent'))
{
$user = User::where('id_message', $id_message)->first()->toArray();
$phoneNumber = $user['mobile_phone'];
$smsCode = $user['sms_code'];
$newDateFormat = date("d.m.yy", strtotime($smsExpirationTime));
$request->session()->flash('message', 'Text message sended.' );
SendTextMessage::SendMessage($phoneNumber,$id_message, $smsCode, $newDateFormat);
Session::put('message_sent', true);
}
return view('login');
}
SendTextMessage Class:
class SendTextMessage
{
public static function SendMessage($phoneNumber, $id_message, $smsCode, $newDateFormat)
{
$sms = new Connect();
$sms->Create("user","pass",Connect::AUTH_PLAIN);
$sms->Send_SMS($phoneNumber,"Message");
$sms->Logout();
}
}
Many thanks for any tip or help.
UPDATE:
problem is only in Chrome.
Edge and internet explorer are fine.
As this script runs on server-side the browser shouldn't be an issue. Based on your code provided, there is no clear answer to give here.
Please try the following in order to debug your problem:
Log messages at each stage of the script in order to see which part was called how often. That will help you to locate the problem. You can use \Log::error("Message") to do that.
Once you know where the problem might be, try to log "decision" making / mission critical variables to logile as well. E.g. \Log::error($session) so that you can understand why that problem might occur. One reason could be that you have a bad configured session caching or your cookies might be messed up. At some point there is probably a piece of data not the way you expect it to be.
You should maybe try to change the way you use Laravel Session.
You indicated that it was working fine on some browsers, that means your server-side code is correct so far, but there is someting messing with Chrome… From there,
if you take a quick look at the Laravel Session doc, you'll see that Session can be stored in cookies, and I bet that this is your actual setup (check in your .env file the SESSION_DRIVER constant, or in your config/session.php file).
If so, to confirm that this cookies-based session setting is the culprit, you might want to change the Session config to make it browser-independent: any other option than cookies will work, the database or file options might be the easier to setup… And if it works I would strongly encourage you to keep using this no-cookie setting to make your code browser-safe.
First: please forgive me - Im a bit of a novice as some of this...
I have a working test site which is running the php facebook SDK to perform some simple graphAPI requests successfully. Namely read a group's feed, which the user is a member of, and process this and display it back on a webpage.
This all works fine, the problem I have encountered is when trying to perform the same request via a php curl POST to another webpage (on the same domain). It seems that the SDK does not carry the expected session to another page when a post request is formed (see "AUTH ERROR2" in code)...this works fine when the following file is included via a "require_once" but not when a curl is made.
I would much rather do a "curl" as Im finding when a "require_once" is done from a page in a different directory level, Im getting php errors of the page not being found - which is expected.
I may just be tackling this problem all wrong...there may be a simpler way to make sure when files are includes, their correct directly level remains intact, or there may be a way to send over the currently authorised facebook sdk session via a curl post. All of which I have tried to no avail, and I would really appreciate any help or advise on this.
Thank you for your time.
//readGroupPosts.inc.php
function readGroupPosts($postVars)
{
//$access_token = $postVars[0];
// ^-- I'm presuming I need this? I have been experimenting appending it to
// the graphAPI request to no success...
$groupID = $postVars[1];
$limit = $postVars[2];
require_once("authFb.inc.php"); //link to the facebookSDK & other stuff
if ($user) {
try {
$groupFeed = $facebook->api("/$groupID/feed?limit=$limit"); //limit=0 returns all;
$groupFeed = $groupFeed['data']; //removes first tier of array for simpler access
$postArray;
for($i=0; $i<count($groupFeed); $i++)
{
$postArray[$i] = array($groupFeed[$i]['from']['name'], $groupFeed[$i]['message'], $groupFeed[$i]['updated_time'], count($groupFeed[$i]['likes']['data']));
}
return $postArray;
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
return "AUTH ERROR1"; //for testing..
}
}
else
{
return "AUTH ERROR2"; //no user is authenticated i.e. $user == null..
}
}
I would much rather do a "curl" as Im finding when a "require_once" is done from a page in a different directory level, Im getting php errors of the page not being found - which is expected.
I may just be tackling this problem all wrong...
Definitively.
Using cURL as a “workaround” just because you’re not able to find your way around your server’s file system is an outrageous idea. Don’t do it. Stop even thinking about it. Now.
there may be a simpler way to make sure when files are includes, their correct directly level remains intact
Yes – for example, to use absolute paths instead of relative ones. Prefixing the path with the value of $_SERVER['DOCUMENT_ROOT'] for example – that way, once you’ve given the path correctly in respect to this “base path”, it does not matter where you’re requiring the file from, because an absolute path is the same no matter from where you look at it.
(And since this is not a Facebook-related problem at all, but just concerns basics of PHP and server-side programming, I’ll edit the tags.)
In a long tiredsome quest to speed up my site, I have figured out something is wrong with the redirection: currently my index.php handles all the homepage redirections via PHP header location 301 Redirect Permanently: website.com >> website.com/en/home and website.de >> website.de/de/home etcettera etcettera (around 20 for this multilingual website) it takes anywhere from 200ms to 6000ms to do the redirecting. Check out the waterfall!
After that, the page loads in a thunderbolt's blink of an eye!
What a waste of time wouldn't you say? What is the server doing all this time?
After careful examination, my best guesse is: ITS DOING LAUNDRY!
I am almost giving up on PHP for this!
Any and all clues to my puzzling prob are very welcomed +1
A. Given facts: Apache/2.0.54 Fedora, PHP 5.2.9. there is no database: just flat php files with around 15 php includes that completes my page with headers and footers). YSlow Grade: 92/100! Good page Speed: 93/100! javascript and css are as much as possible combined. Cache controlls seem well set too (as proven by the grades). Whats missing in those 7 points out of 100: not using Keep-Alive (beyong my controll in shared hosting and not using Content Delivery Network. I can live with those missing 7 points, but this is major hit on speed!
B. Furthermore: i recently was given great insights over here that i should use url rewriting via htacces. Point taken, BUT, perhaps there is sometin else wrong here that i should correct before moving on to the for me more difficult apache regex syntaxes.
C. Faster way: When I php include the intended homepage, instead of redirect, then all loads fast, but the url is not rewritten: it sits at website.com on the browser bar, whereas i wish after including it to become website.com/en/home. Is this possible with PHP? To include+change the current address of the url, too?
Conclusions: you can redirect using index.php, or using .htaccess. Sofar from my tests (coming from the genius answers below!THANKS EVERYONE!) the latter seems unmatched in speed: much faster redirecting than a php redirect! reducing the redirect to shorter than the first dns lookup.
see here how to do this correclty for multilingual site
Damn, I hate getting stuck with this kind of problem. You need to eliminate some variables.
First I should point out that PHP will not flush all of its own headers until you start outputting things (or, if the output_buffering(?) ini directive is set to x bytes, until you have output x bytes). So the following script will not finish "sending headers" until the very end:
<?php
header('Content-Type: text/pants');
sleep(6);
header('Ding-Ding: time to put the socks in the dryer');
echo "z"; // headers are sent here
What happens to the call to en/home if you put exit; or echo "wheeeee"; exit; at the very top of that PHP script? Then what happens when you substitute it with a plain, empty file? If the php script with exit is slow but the plain text file is fast, the PHP interpreter is probably playing funny buggers. If you still get the delay for both, you've eliminated the actual response generation as the cause (but I'm still trying to come up with some ideas if this is the case).
Also, can you ssh to the server? If so, can you try wgetting the same page from inside the server? If you can without the speed problem, I would be looking at the client side. If you can't SSH, you could try doing a request from PHP, though I'm really not sure if this will work:
<?php
$context = stream_context_create(array(
'http'=>array(
// send request headers if you need to
'header'=>array(
'Foo: Bar',
'Bar: Baz',
),
),
));
$start = microtime(true);
$response = file_get_contents('http://yourserver.com/', null, context);
$end = microtime(true) - $start;
var_dump($end);
// for some bizarre reason, PHP emits this variable into the local scope.
var_dump($http_response_header);
Have you tried doing the same request from other machines, or other places in the world? This can confirm or deny if it's just your machine.
Another thing you can try if it is the response generation is to do a little bit of hack-profiling on the production server. I hate having to do this stuff, but sometimes your code just refuses to behave on the production server like it behaves in your development environment or on staging. Do this to the script that generates /en/home:
<?php
// put this at the very top
$rqid = uniqid('', true);
$h = fopen(__DIR__.'/crap.log', 'a');
fwrite($h, $rqid.' [START] '.microtime(true).PHP_EOL);
fclose($h);
// do all that other wonderful stuff, like laundry or making a cup of tea
// put this at the very end
$h = fopen(__DIR__.'/crap.log', 'a');
fwrite($h, $rqid.' [END] '.microtime(true).PHP_EOL.PHP_EOL);
fclose($h);
Run a few requests against it, check to make sure 'crap.log' is getting stuff written to it (check permissions!!), and then you'll have some data that will show whether there is something in your script that needs to be investigated further as the cause of the slowness.
Oh, did I mention MySQL indexes? Are you doing any queries during the request? Have you added all of the proper indexes to the tables?
Steven Xu raises a good point in the comments for your question - are you sure the program you're using to generate the waterfall is giving you good info? Try installing Firebug if you haven't already, click the little firebug icon in the bottom right of firefox and make sure the "Net" panel is open, then re-run your request and see if the waterfall is consistent with the results you're seeing in the program you used.
Also, I know this is kind of a boneheaded suggestion and I apologise, but I think it needs to be said: your host doesn't allow ssh and only uses PHP 4? I would seriously consider another host. It may even solve this specific problem.
I will add more stuff as I think of it.
If it is indeed the headers taking ages, then your JS/CSS/HTML is irrelevant.
You can do the forwarding in .htaccess.
RewriteEngine On
RewriteRule ^$ en/home [R=301]
This will essentially send the same header, but it won't invoke the PHP engine first to do it :)
Update
On closer inspection, it would seem to me that your en/home page is taking the longer time to download.
I think Ignacio Vazquez-Abrams may have the answer: after you call header() to do the redirection you need to call exit() to cause the PHP script execution to stop. Without that the script will keep executing, sending output to the browser, until the end. Since the browser has to wait for the server side script to end before performing the redirection that could cause the problem.
Update
Just read Alex's update and he seems to be correct. The /en/home page is where the time is.
Is it OK to give full authorization to any request coming from the command line?
My idea was to make this check:
if(isset($_SERVER['argc']) AND $_SERVER['argc']>=2) {
// it must be the admin, give him full authorization, no further checks needed.
} else {
// normal web request, authentication needed.
}
Does this make sense?
Anything else I should know before I start using the command line to execute my php scripts?
It's only safe if the server has only one user. Otherwise you need to either:
Check for the correct user ID in the script
Make the script only executable for that user
(This is assuming a Linux server)
The command line is not a very good place from which to control your web application: your app displays HTML output, which is not much good to a human looking at a console (not to mention the JavaScript that won't work etc).
You could arrange for different output to be generated when running from the command line, but as a practical matter: why bother with all this? Why not have the administrator be authenticated from the web just like any other user?
If you want to have a special backdoor built into your app anyway though, I would suggest something like this (which is web-based):
define('ADMIN_BACKDOOR', true); // comment out to disable
$is_admin = defined('ADMIN_BACKDOOR') && $_SERVER['REMOTE_ADDR'] == '127.0.0.1';
This is IMO next to impossible to exploit, and it allows you admin access from a natural environment (the browser).
I want to create a way to test different layouts on a page to see which get more conversions.
For example. If I have 2 versions of a page and I send 50% to page A and 50% to page B and see which one converts more sales.
So I am thinking maybe use .htaccess to rewrite half to page A and the other half to page B.
But how can I do that with .htaccess is there a way? do I need to use PHP instead to do this?
Also if there is a better way to do this, or any cautions I should be aware of, please let me know.
Lots of ways to deal with it on your own code. If however you're already using Google Analytics and don't care to use javascript for the test, spare yourself a lot of trouble and look at http://www.google.com/websiteoptimizer/index.html
Update (Reconfine): Google website optimizer no longer exists, this has been replaced with "Google Analytics content experiments" https://developers.google.com/analytics/devguides/platform/experiments-overview
I would do that using php, following way:
After the user got to the default php file, i would store his browser data in a db table, and the active layout identifier (filename, row id, etc...).
Everytime the server gets a request from this user, it shows the page, mapped to him.
But! If you have two independent pages, i would only store how many people visited site one, and site two, and redirect them to page A, and to page B by a 50% division.
If you've got a supported database and are using PHP 5.2 or later, you can use a free split testing library called phpScenario, found at www.phpscenario.org
Then you write more or less something like this:
require_once 'scenario_setup.php'; // you write this
if (Scenario::IsControl('experimentname')) {
// read and output version 1
} else {
// read and output version 2
}
Then when you get to your conversion point (say, sign up):
require_once 'scenario_setup.php'; // same
Scenario::Complete('experimentname');
And to view the stats (probably on your admin page):
require_once 'scenario_setup.php'; // yup
Scenario::RenderXml('experimentname');
I think php will be very useful. For example, you can use rand or push a variable in a file :
$int = file_get_contents('var');
if ($int) {
$int++;
} else{
$int = 1;
}
if (($int % 2) == 0) {
header('Location: url1);
} else {
header('Location: url2);
}
file_put_contents ('var', $int);
With apache, you have to setup a load balancer : http://httpd.apache.org/docs/2.1/mod/mod_proxy_balancer.html
I would use php personally. Then you can save which page layout you chose for them as a session var making it easy to load that layout on each page refresh. You would probably also want to save into the database with their username (if they login) and if they visit later show them the same layout.