Tag Archives: web

Go to this web site: 




Now go to your Fire TV.
Settings > About > Check For System Update



Well, it is always good to have a refreshing layout. I spent like 2 days to tweak my website layout. It’s really awesome. Useless widgets are removed and background changed. There is even a whole new typography. I love it so much!


For both server and website developing, I usually use Xampp’s Apache to create a localhost server. However, I hate to put my important files in the htdocs inside Apache. Instead I would rather put the folder inside Documents, and make a link to htdocs.

First, create a symbolic link from your actual folder to htdocs. For example, ln -s /Users/Nicholas/Documents/Xampp Workspace /Applications/Xampp/xamppfiles/htdocs/nicholas.

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However, this is not done because the owner of your directory is Nicholas, but not “nobody”. Also, we cannot change the folder’s owner to nobody as this is actually an illegal owner. So what we gonna do is add Nicholas as the user in Apache. [Caution: This can actually create a security issue on your computer, since now the Xampp can access files of the user Nicholas]
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To do that, add “user Nicholas” to the end /Applications/Xampp/xamppfiles/etc/httpd.conf. Then restart Xampp.
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Actually, this website was my portfolio webpage before becoming a wordpress. It is moved to here: Using wordpress, I put the old webpage aside and always forgot to transfer the information from it to the front page. Anyway, I hope this can remind me of the projects and webpages I created.

Today, I moved my to my owned domain, integrated with my old portfolio website. Thanks to my subscribers, my blog has been having a steady viewing rate over time. However, all those traffics went to as the blog was hosted there. To redirect them back to my domain, I have been preparing the things needed for a long time.

As a record, I had my blog in BlogSpot and WordPress before, and now they are redirected to nicholasworkshop.

Anyways, it is finally here and thank you for checking out my blog!

It’s quite often for a developer to make use of the user agent to determine what browser does a user used, especially for those who develop web services and websites. Recently I found a website which has a huge database of mobile device information, including the user agent string and even the functions supported in the device browser.

ScientiaMobile WURFL Explorer

Tera-WURFL Explorer – Samsung GT-9100 (Galaxy SII)

To begin with, we need to understand that in the HTTP protocol, browser send its identity called user agent to the server to request the wanted webpage. Every browser has its only unique user agent value, and therefore we can check that value to identify the user browser. So, first we have to take a look at some examples of user agents of mobile devices.

iPhone user agent

Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A543a Safari/419.3

iPod Touch user agent

Mozilla/5.0 (iPod; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3A101a Safari/419.3

iPad user agent

Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.10

Android user agent

Mozilla/5.0 (Linux; U; Android 1.1; en-gb; dream) AppleWebKit/525.10+ (KHTML, like Gecko) Version/3.0.4 Mobile Safari/523.12.2
Mozilla/5.0 (Linux; U; Android 2.1; en-us; Nexus One Build/ERD62) AppleWebKit/530.17 (KHTML, like Gecko) Version/4.0 Mobile Safari/530.17

BlackBerry user agent

BlackBerry9000/ Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/120

After all, in programming, we gather these data to do the checking. First in JavaScript:

if (/(iPhone|iPod|iPad)/.test(navigator.userAgent)) {
    /* This is iOS */
if (/Android/.test(navigator.userAgent)) {
    /* This is Android */
if (/BlackBerry)/.test(navigator.userAgent)) {
    /* This is BlackBerry */
if (/(iPhone|iPod|iPad|BlackBerry|Android)/.test(navigator.userAgent)) {
    /* This is one of the mentioned mobile device browsers */

And this is how it works in PHP:

if (preg_match('/iPhone|iPod|iPad/', $_SERVER['HTTP_USER_AGENT'])) {
    /* This is iOS */
if (preg_match('/Android/', $_SERVER['HTTP_USER_AGENT'])) {
    /* This is Android */
if (preg_match('/BlackBerry/', $_SERVER['HTTP_USER_AGENT'])) {
    /* This is BlackBerry */
if (preg_match('/iPhone|iPod|iPad|BlackBerry|Android/', $_SERVER['HTTP_USER_AGENT'])) {
    /* This is one of the mentioned mobile device browsers */
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