Hey, welcome to mobiforge!

I've taken a look, and the deviceatlas page for the Palm Centro definitely says that Image.Gif87 is not supported (ie: False)

I also checked this device against the currently available version of our JSON file, and the value it returns is correct!

So we can try to sort this our for you, can you tell me if you are using a newly downloaded JSON file, or if you are using the one that came packaged with the API?

I'm using a file:

Sample.json dated 7.30.08

I can log back in to device anywhere and send you a screenshot of what I'm seeing

Thanks

Well I'd guess that the reason you're not seeing the correct data is because you're using a JSON file that was created back in July :)

If you login to deviceatlas.com you should be able to download an updated JSON to test with. We package an old version of the JSON file to help developers get up and running as quickly as possible, if you want updated data, you need to update your JSON!

Thanks,

I downloaded the new json file and uploaded it tom server:

20080916.json

1. I renamed it Sample.json...and it doesn't work

2. I also tried changing this line of code:

$tree = Mobi_Mtld_DA_Api::getTreeFromFile("json/20080916.json");

and no luck..I save the old (7.30.08) Sample.json file as Sample2.json and everything works when I change back to that file.

Do I need to update the api in some way?

Its the latest php api
(http://deviceatlas.com/getAPI/php)

1. What are the errors that you're getting with the new JSON file?
2. What OS are you running the api on?

Could double check the permissions on the new JSON file? I've just tested the latest API and JSON file here and it failed because the webserver didn't have permission to read the new file. Once I granted permissions to normal users, everything was fine again!

Daniel

Hello,

1. Both the old and the new json files have permissions of 644.

2. This page (new json) yields an error: http://www.bmobilehost.com/dd/mobi_new.php

This page contains the following errors:

error on line 1 at column 37: Extra content at the end of the document
Below is a rendering of the page up to the first error.

3. This page (old json) works: http://www.bmobilehost.com/dd/mobi_old.php

4. page code:

<?php

header ("Cache-Control: max-age=200 ");
header ("Content-Type: application/xhtml+xml ");
echo '<?xml version="1.0" encoding="utf-8"?>';

include 'Mobi/Mtld/DA/Api.php';

$memcache_enabled = extension_loaded("memcache");
$no_cache = array_key_exists("nocache", $_GET);
if ($memcache_enabled && !$no_cache) {
$memcache = new Memcache;
$memcache->connect('localhost', 11211);
$tree = $memcache->get('tree');
}

if (!is_array($tree)) {
$tree = Mobi_Mtld_DA_Api::getTreeFromFile("json/Sample2.json");
if ($memcache_enabled && !$no_cache) {
$memcache->set('tree', $tree, false, 10);
}
}

if ($memcache_enabled && !$no_cache) {
$memcache->close();
}

$ua = $_SERVER['HTTP_USER_AGENT'];
$properties = Mobi_Mtld_DA_Api::getProperties($tree, $ua);
?>

Welcome Standard xhtml Users.

<?php print_r($properties); ?>

I've just downloaded both of your JSON files and re-run my tests using them directly, instead of my normal ones. Both tests passed!

Tell me, are you unzipping the JSON archives on your own machine, and then transferring them to your test machine? I'd guess that the error:

But again, I'm having absolutely no problems with either your Sample.json, or your Sample2.json files (from the examples that you just linked me to)

I get this same error when using Safari and if I try to view the page source it's empty.
On the other hand, using Firefox I can see the page source and it is:

<?xml version="1.0" encoding="utf-8"?>

Nothing else.

Are you sure there are no errors logged in your webserver error.log or php error log?

Thanks for checking,

I got these errors originally when I called specific properties that were not available in a web browser ( so i switched to print_r($properties)...it seems to be that php is failing to execute because of the json file and then not rendering the page which causes an xhtml error

I'm on mac os x and the json zip file automatically unzips during the download

I tested - http://www.bmobilehost.com/dd/mobi_new.php - on

MAC OSX
safari - error
firefox - error

WINDOWS VISTA
Internet explorer - for some strange reason it wants to download both my new and old file
Firefox - error

Daniel,

what permissions number does your json file have on your test server?

I do my testing on my Linux (Ubuntu) dev box, using Firefox 3
I'd imagine that the new line issue wouldn't affect you if you're using a Mac, but just to confirm it I'll ask Andrea to test it tomorrow morning.

As for the file permissions - when I extracted the JSON file it was 600, which I then made 644 to allow apache to see the file. I'll run some more tests on the pages and JSON files when I get into work in the morning, and I'll make sure everything looks ok using wget too, just incase! :)

Thanks

I reverted to the api out of the box and simply replaced the json file with the latest download and ..no luck.
I also tried downloading the json file on windows to see if the download process affected the file..no luck

http://www.bmobilehost.com/dd/sample/mobi_new.php
Sample.json permissions 644

http://www.bmobilehost.com/dd/sample/mobi_old.php
Sample2.json permissions 644

API CODE:

<?php
include '../Mobi/Mtld/DA/Api.php';

echo '

';
 
$s = microtime(true);
 
$memcache_enabled = extension_loaded("memcache");
$no_cache = array_key_exists("nocache", $_GET);
if ($memcache_enabled && !$no_cache) {
  $memcache = new Memcache;
  $memcache->connect('localhost', 11211);
  $tree = $memcache->get('tree');
}
 
if (!is_array($tree)) {
  $tree = Mobi_Mtld_DA_Api::getTreeFromFile("json/Sample.json");
  if ($memcache_enabled && !$no_cache) {
    $memcache->set('tree', $tree, false, 10);
  }
}
 
if ($memcache_enabled && !$no_cache) {
  $memcache->close();
}
 
$properties = Mobi_Mtld_DA_Api::getProperties($tree, $_SERVER['HTTP_USER_AGENT']);
//further performance can be gained through caching the properties against the user-agent as a key (since many requests are likely to come from one device during its visit)
 
$e = microtime(true);
print "Time taken: " . floor(($e - $s)*1000) . "ms\r\n";
 
print_r($properties);
 
echo '

';
?>

This is definitely strange. I've just re-downloaded the latest version of the PHP API, as well as both of your json files (Sample.json and Sample2.json).

I'm having absolutely no problems whatsoever :) I'll chat to Andrea when he gets in and ask him to do the same test.

Solution..
After installing the wurfl and tera wurfl and having them fail, I found a clue in the tera wurfl config

my server has an 8M memory limit, so when the json file or the wurfl.xml file exceeded that it failed silently

so I added this php code and it worked:

ini_set('memory_limit','50M');

now on to testing the parameters on the devices

Bloody hell - thanks for telling us how you sorted it out!
I think that that may be in the DeviceAtlas FAQ, I'll have to double check though. If not, it will definitely be going in!

Daniel

8M is surely a low limit. I am surprised about the "silent failure", it's a PHP error and PHP should log it either in your webserver's error logs or in php.log or to screen, depending on your php.ini file.

I agree with Daniel this is worth an FAQ entry.