Archive for the Category »coding «

Mar

Hi,

today I got my commercial API from Orb (thanks to Orb).

Now I am able to share with you my little App I wrote for Android.

—- Info

With this Application ( i called it Androrb) you may request your media list that is stored on your pc from the orb server and open a video, audio, webradio or photo on your Android G1 Mobile.

Its still Alpha and there are several things to improve. Please keep in mind this is just a hobby from me and the only reason I give it into the public is to share my joy that I do not need to login by browser into orb, just to listen my music.

— Where to get the Pre-Version?

Here you find the Alpha Version to install on your G1.
http://www.guruk.com/android/androrb03a.apk

You can install this APK with a Tool you find in the Android Market called “Apps Installer”

When you open it first Time you have to enter your ORB UserID and Passwort.

I am only able to test this Version with WIFI on a G1 RC33 . So I am glad you send me your response and experience in your Environment.

—— Develop with me

Should you like helping in development, you may have a look on: https://developer.orb.com/wiki/Main_Page

There you find how to access the API and what commands are possible for he XML Response.
For example:
1. https://api.orb.com/orb/xml/session.login?apiKey=evcphjpgribp&l=myorbid&password=myorbpw
creates a session Key

2. https://api.orb.com/orb/xml/media.search?q=mediaType%3Dvideo&groupBy=author
now we request all Videos.

You may construct and explain XML Feeds you need and I can implement them by time.

—- Finaly

All the best and Enjoy.

Yours
Chris

—some pics:

http://www.guruk.com/android/1-registerdata.jpg
http://www.guruk.com/android/2-about.jpg
http://www.guruk.com/android/3-login.jpg
http://www.guruk.com/android/4-showfolders.jpg
http://www.guruk.com/android/5-listcontent.jpg
http://www.guruk.com/android/6-loadmedia.jpg

Category: android, coding Tags: android, coding, g1 19 Comments

Feb

delay in ms

admin

Somtimes you may like to pause your javascript for a while (milliseconds). Here is a simple script i found from sean.co.uk that do exactly this:

// www.sean.co.uk

function pausecomp(millis)
{
var date = new Date();
var curDate = null;

do { curDate = new Date(); }
while(curDate-date < millis);
}

</script>

Category: javascript Leave a Comment

Dec

Select Box jump to URL

admin

When you need to jump to a specific URL direct after you choosed a Statement from a Selectbox:

<option value=”">Choose a Language…</option>

<option value=”database.php?lang=en”>English</option>

<option value=”database.php?lang=de”>Deutsch</option>

<option value=”database.php?lang=id”>Italian</option>

<option value=”database.php?lang=ru”>Russian</option>

</select>

Category: html, javascript Leave a Comment

Dec

Php Browser Language Detection

admin

If you need a Browser Language Detection for your Coding, try this. At the end it come stored in a Session.

< ? php
  function lixlpixel_get_env_var($Var)
    {
      if (empty($GLOBALS[$Var]))
        {
          $GLOBALS[$Var] = (!empty($GLOBALS['_SERVER'][$Var])) ? $GLOBALS['_SERVER'][$Var] : (!empty($GLOBALS['HTTP_SERVER_VARS'][$Var])) ? $GLOBALS['HTTP_SERVER_VARS'][$Var] : ”;
        }
    }

  function lixlpixel_detect_lang()
    {
      // Detect HTTP_ACCEPT_LANGUAGE & HTTP_USER_AGENT.
      lixlpixel_get_env_var(‘HTTP_ACCEPT_LANGUAGE’);
      lixlpixel_get_env_var(‘HTTP_USER_AGENT’);

      $_AL = strtolower($GLOBALS['HTTP_ACCEPT_LANGUAGE']);
      $_UA = strtolower($GLOBALS['HTTP_USER_AGENT']);

      // Try to detect Primary language if several languages are accepted.
      foreach ($GLOBALS['_LANG'] as $K)
        {
          if (strpos($_AL, $K) === 0)
              return $K;
        }

      // Try to detect any language if not yet detected.
      foreach ($GLOBALS['_LANG'] as $K)
        {
          if (strpos($_AL, $K) !== false)
              return $K;
        }
      foreach ($GLOBALS['_LANG'] as $K)
        {
          if (preg_match(“/[\[$ ]{$K}[;,_\-$]/”, $_UA))
              return $K;
        }

      // Return default language if language is not yet detected.
      return $GLOBALS['_DLANG'];
    }

  // Define default language.
  $GLOBALS['_DLANG'] = ‘en’;

  // Define all available languages.
  // WARNING: uncomment all available languages

  $GLOBALS['_LANG'] = array(‘af’, // afrikaans.
  ‘ar’, // arabic.
  ‘bg’, // bulgarian.
  ‘ca’, // catalan.
  ‘cs’, // czech.
  ‘da’, // danish.
  ‘de’, // german.
  ‘el’, // greek.
  ‘en’, // english.
  ‘es’, // spanish.
  ‘et’, // estonian.
  ‘fi’, // finnish.
  ‘fr’, // french.
  ‘gl’, // galician.
  ‘he’, // hebrew.
  ‘hi’, // hindi.
  ‘hr’, // croatian.
  ‘hu’, // hungarian.
  ‘id’, // indonesian.
  ‘it’, // italian.
  ‘ja’, // japanese.
  ‘ko’, // korean.
  ‘ka’, // georgian.
  ‘lt’, // lithuanian.
  ‘lv’, // latvian.
  ‘ms’, // malay.
  ‘nl’, // dutch.
  ‘no’, // norwegian.
  ‘pl’, // polish.
  ‘pt’, // portuguese.
  ‘ro’, // romanian.
  ‘ru’, // russian.
  ‘sk’, // slovak.
  ‘sl’, // slovenian.
  ‘sq’, // albanian.
  ‘sr’, // serbian.
  ‘sv’, // swedish.
  ‘th’, // thai.
  ‘tr’, // turkish.
  ‘uk’, // ukrainian.
  ‘zh’ // chinese.);

  // Redirect to the correct location.

  //header(‘location: http://www.your_site.com/index_’.lixlpixel_detect_lang().’.php’); // Example Implementation
  //echo ’The Language detected is: ’.lixlpixel_detect_lang(); // For Demonstration


  function setautolang()
    {
      // start up your PHP session!
      session_start();

      $sprache = lixlpixel_detect_lang();

      if ($sprache == “de”)
        {
          $_SESSION['lang'] = “deutsch”;
        }
      elseif ($sprache == “en”)
        {
          $_SESSION['lang'] = “english”;
        }
      elseif ($sprache == “cs”)
        {
          $_SESSION['lang'] = “tschechisch”;
        }
      elseif ($sprache == “ru”)
        {
          $_SESSION['lang'] = “russian”;
        }
      elseif ($sprache == “it”)
        {
          $_SESSION['lang'] = “italian”;
        }
      else
        {
          $_SESSION['lang'] = “english”;
        }
    }
?>

Category: php One Comment

Dec

Jobs for international Coders II

admin

include_once(ABSPATH . WPINC . ‘/rss.php’);
$rss = fetch_rss(‘http://www.RentACoder.com/RentACoder/misc/LinkToUs/RssFeed_newBidRequests.asp’);
$maxitems = 50;
$items = array_slice($rss->items, 0, $maxitems);
?>

No items

‘;
else
foreach ( $items as $item ) : ?>

“;

$item['description'] = str_replace(“font-weight:bold;”, “font-weight:normal;”, $item['description']);

$item['description'] = str_replace(“font-size:12px; color:#006699;”, “ffont-size:10px; color:#000000;”, $item['description']);

echo ““.$item['description'].”“;

Category: coding, personal development Leave a Comment

Nov

Easy handling for delimiter PHP Echo Outputs

admin

Sometimes you have some complex Echo and in your String are ’ or ” and you may come quit crazy with the delimeter of it like: echo “<a href=”goto.htm”>test</a>”. Already you would created an Error by including ” in “”. Now you can choose to make outside ‘ or Inside. But when the Echo comes more complex, you may get some Headache where to use ” and where ‘ and where `

For that Reason you can write your Output for the Echo in <<< label (your content) label; and all is done.

<?php

echo <<< _end_this

Just a Demo to see, that you can include ‘ or ” or ` in your Output without Problem.<br>Like for Standart Html Commands as <a href=”test.htm”><b>test</b></a><br> and so on

_end_this;

Category: php Leave a Comment

Nov

Optimize your PHP Code

admin

When you like really like to code as a pro you should take care on the Optimiziation of your Code. You can speed up your Code by Factor 7, just by taking care on a few Hints.

For example when you look for Scalability you have to make much more compromises instead when you look to speed up your Code.

Especialy when you expect a lot of Traffic you always should look for speed. What is the best System when it is too slow. Just remember your own acting in the Net, when a Page is too slow, you just leave it.

Here I collected you some of the most interesting Tips about that Topic.

I researched within the following Resources:

http://www.Cluesheet.com
http://www.chazzuka.com/blog/?p=163
http://reinholdweber.com/?p=3
http://phplens.com/lens/php-book/optimizing-debugging-php.php
http://www.phpbuilder.com/columns/weerning20021209.php3?print_mode=1

Thanks to all the Coders before me, who collected already quit a lot of that Information.

Introduce your PHP-code with <?php because a simple <? may cause interference with XML-code.
Do use single quotes over double quotes.
Do use switch over lots of if statements
<?php echo ($var==1)?'var is 1':'var is not 1'; ?>

instead of

<?php if ($var==1){ echo 'var is 1'; } else{ echo 'var is not 1'; }

?>
Do avoid testing loop conditionals with function tests every iteration eg.
for($i=0;i<=count($x);$i++){…
Do use foreach for looping collections/arrays. PHP4 items are byval, greater than PHP5 items are byref
Do consider using the Singleton Method when creating complex PHP classes.
Do use POST over GET for all values that will wind up in the database for TCP/IP packet performance reasons.
Do use ctype_alnum,ctype_alpha and ctype_digit over regular expression to test form value types for performance reasons.
Do use full file paths in production environment over basename/fileexists/open_basedir to avoid performance hits for the filesystem having to hunt through the file path. Once determined, serialize and/or cache path values in a $_SETTINGS array. $_SETTINGS["cwd"]=cwd(./);
Do use require/include over require_once/include_once to ensure proper opcode caching.
Do use tmpfile or tempnam for creating temp files/filenames
Do use a proxy to access web services (XML or JSOM) on
If a method can be static, declare it static. Speed improvement is by a factor of 4.
echo is faster than print.(* compare with list from phplens by John Lim)
Use echo’s multiple parameters instead of string concatenation.
Set the maxvalue for your for-loops before and not in the loop.
<?php $max=filesize('myfile.dat'); //just to make an example for ($i=0; $i<$max; $i++){ //your code } ?>

to

<?php for ($i=0; $i<filesize("myfile.dat"); $i++)

?>
Unset your variables to free memory, especially large arrays.
Avoid magic like __get, __set, __autoload
require_once() is expensive
Use full paths in includes and requires, less time spent on resolving the OS paths.
If you need to find out the time when the script started executing, $_SERVER[’REQUEST_TIME’] is preferred to time()
See if you can use strncasecmp, strpbrk and stripos instead of regex
str_replace is faster than preg_replace, but strtr is faster than str_replace by a factor of 4
If the function, such as string replacement function, accepts both arrays and single characters as arguments, and if your argument list is not too long, consider writing a few redundant replacement statements, passing one character at a time, instead of one line of code that accepts arrays as search and replace arguments.
It’s better to use select statements than multi if, else if, statements.
Error suppression with @ is very slow.
Turn on apache’s mod_deflate
Close your database connections when you’re done with them
$row[’id’] is 7 times faster than $row[id]
Error messages are expensive
Do not use functions inside of for loop, such as for ($x=0; $x < count($array); $x) The count() function gets called each time.
Incrementing a local variable in a method is the fastest. Nearly the same as calling a local variable in a function.
Incrementing a global variable is 2 times slow than a local var.
Incrementing an object property (eg. $this->prop++) is 3 times slower than a local variable.
Incrementing an undefined local variable is 9-10 times slower than a pre-initialized one.
Just declaring a global variable without using it in a function also slows things down (by about the same amount as incrementing a local var). PHP probably does a check to see if the global exists.
Method invocation appears to be independent of the number of methods defined in the class because I added 10 more methods to the test class (before and after the test method) with no change in performance.
User HTML for Output instead PHP
<h3> Today </h3> <p>Today I met <?php echo $person; ?>. That was nice.</p>

instead of

<?php echo "<h3>Today</h3><p>Today I met $person. That was nice.";

?>
Methods in derived classes run faster than ones defined in the base class.
A function call with one parameter and an empty function body takes about the same time as doing 7-8 $localvar++ operations. A similar method call is of course about 15 $localvar++ operations.
Surrounding your string by ‘ instead of ” will make things interpret a little faster since php looks for variables inside “…” but not inside ‘…’. Of course you can only do this when you don’t need to have variables in the string.
When echoing strings it’s faster to separate them by comma instead of dot. Note: This only works with echo, which is a function that can take several strings as arguments.
A PHP script will be served at least 2-10 times slower than a static HTML page by Apache. Try to use more static HTML pages and fewer scripts.
Your PHP scripts are recompiled every time unless the scripts are cached. Install a PHP caching product to typically increase performance by 25-100% by removing compile times.
Cache as much as possible. Use memcached – memcached is a high-performance memory object caching system intended to speed up dynamic web applications by alleviating database load. OP code caches are useful so that your script does not have to be compiled on every request
When working with strings and you need to check that the string is either of a certain length you’d understandably would want to use the strlen() function. This function is pretty quick since it’s operation does not perform any calculation but merely return the already known length of a string available in the zval structure (internal C struct used to store variables in PHP). However because strlen() is a function it is still somewhat slow because the function call requires several operations such as lowercase & hashtable lookup followed by the execution of said function. In some instance you can improve the speed of your code by using an isset() trick.
Ex. view plain copy to clipboard print ?
1. if (strlen($foo) < 5) { echo “Foo is too short”; }
vs. view plain copy to clipboard print ?
1. if (!isset($foo{5})) { echo “Foo is too short”; }
Calling isset() happens to be faster then strlen() because unlike strlen(), isset() is a language construct and not a function meaning that it’s execution does not require function lookups and lowercase. This means you have virtually no overhead on top of the actual code that determines the string’s length.
When incrementing or decrementing the value of the variable $i++ happens to be a tad slower then ++$i. This is something PHP specific and does not apply to other languages, so don’t go modifying your C or Java code thinking it’ll suddenly become faster, it won’t. ++$i happens to be faster in PHP because instead of 4 opcodes used for $i++ you only need 3. Post incrementation actually causes in the creation of a temporary var that is then incremented. While pre-incrementation increases the original value directly. This is one of the optimization that opcode optimized like Zend’s PHP optimizer. It is a still a good idea to keep in mind since not all opcode optimizers perform this optimization and there are plenty of ISPs and servers running without an opcode optimizer.
Not everything has to be OOP, often it is too much overhead, each method and object call consumes a lot of memory.
Do not implement every data structure as a class, arrays are useful, too
Don’t split methods too much, think, which code you will really re-use
You can always split the code of a method later, when needed
Make use of the countless predefined functions
If you have very time consuming functions in your code, consider writing them as C extensions
Profile your code. A profiler shows you, which parts of your code consumes how many time. The Xdebug debugger already contains a profiler. Profiling shows you the bottlenecks in overview
mod_gzip which is available as an Apache module compresses your data on the fly and can reduce the data to transfer up to 80%
foreign domains using XMLHTTP to avoid cross-domain errors. eg. foo.com<–>XMLHTTP<–>bar.com

Do use error_reporting (E_ALL); during debug.
Do set Apache allowoverride to “none” to improve Apache performance in accessing files/directories.
Do use a fast fileserver for serving static content (thttpd). static.mydomain.com, dynamic.mydomain.com
Do serialize application settings like paths into an associative array and cache or serialize that array after first execution.
Do use PHP output control buffering for page caching of heavilty accessed pages
Do use PDO prepare over native db prepare for statements. mysql_attr_direct_query=>1
Do NOT use SQL wildcard select. eg. SELECT *
Do use database logic (queries, joins, views, procedures) over loopy PHP.
Do use shortcut syntax for SQL insers if not using PDO parameters parameters. eg. INSERT INTO MYTABLE (FIELD1,FIELD2) VALUES ((”x”,”y”),(”p”,”q”));

And yes also a very good Tip from Marion Weerning written on PHPBuilder.com with this simple routine:

<?php
$timeparts = explode(” “,microtime());
$starttime = $timeparts[1].substr($timeparts[0],1);//insert your code here

$timeparts = explode(” “,microtime());
$endtime = $timeparts[1].substr($timeparts[0],1);
echo bcsub($endtime,$starttime,6)
?>

Category: php Leave a Comment

Nov

Protect your PHP Code

admin

Sometimes you may need to protect your PHP Code. For example when you like to monetize it. For that reason I searched for Applications that help to solve that case and found one Product that works quit fast and does not need any extra Loader. Just Decode any PHP Code and upload it to your Server instead of the Original Code.

TrueBug PHP Obfuscator & Encoder is for PHP application developers use to protect their source codes from modification, the Obfuscate functional will replace class, function, and variable names in PHP source codes with md5-hashes, making source code harder to understand and reverse engineering. The Software also includes simple PHP Encoder engine to encode through the source code by using byte-code technique, and no loader is required to install on the server machine.

Features:

Friendly user interface, developers can easily select files to be obfuscated and encoded, can select which classes, functions, and variables to be included or excluded from obfuscation.
Run scripts under virtual hosting accounts with no change to the default PHP installation and require no changes to the standard web server installation.
Free minor upgrades

System Requirements:

750 MHz CPU with minimum 256 MB of RAM
Windows 2000/XP/2003/Vista

I found several Solutions who does charge up to $299 for their Product. Your get TrueBug starting at $24.95.

Personaly I say that is a very fair Price for such a good working Tool.

Get your PHP Protection at: http://www.truebug.com/

Category: php One Comment

Nov

Regex any URL in PHP

admin

How to validate URLs by a small RegEx Function:

function valid_url($str) {
return (!preg_match(‘/^(http|https|ftp):\/\/([A-Z0-9][A-Z0-9_-]*(?:\.[A-Z0-9][A-Z0-9_-]*)+):?(\d+)?\/?/i’, $str)) ? FALSE : TRUE;
}

And how does it work:

^ is an anchor meaning it must start with the pattern
(http|https|ftp) matches and captures one of the three
:\/\/ is :// literally. (\/ is / escaped)
([A-Z0-9][A-Z0-9_-]*(?:\.[A-Z0-9][A-Z0-9_-]*)+)

(letter meaning a-z in the following)

1 letter or number
any number of letters, numbers, _ or -.
A literal dot
1 letter or number
any number of letters, numbers, _ or -.
+ means the previous pattern 1 or more times, and the grouping is around (?:\.[A-Z0-9][A-Z0-9_-]*)+, so it means that pattern any number of times. (It allows for .co.uk for example. )

(\d+)?\/?/i
0-1 :
Any amount of digits
An optional literal /

You may also like this Tutorial for regular Expressions:
>>Regular Expression Tutorial

Archive for the Category »coding «

home

post categories

mobile applications

Recent Posts

Support

Recent Posts

Tag Cloud

Meta

Archive for the Category »coding «

home

post categories

mobile applications

Subscribe to my Newsletter

Recent Posts

Support

Recent Posts

Tag Cloud

Meta