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How can I get the MAC and the IP address of a connected client in PHP?
...ork, for example your mac address will be stored and visible in your local wifi router, and outside of it, all device in your network will be using and will be communicated with same IP address, which router will translate back to mac address and will send it internally.
– Dhee...
App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...时也会一直没有读数。例如，如果你在室内而且没有连接WiFi，设备将无法获得读数。无法获得读数的另一个原因，可能是你的手机出于省电的目的，关闭了GPS功能。如果你的位置传感器一直收不到数据，你需要逐一排查上述可...
Differences between cookies and sessions?
...te you. This has happened in online gambling scenarios -- Sniff the hotel wifi, steal a session ID, and access the account. Securing a session is another story altogether.
– Chris Cudmore
Jan 13 '15 at 13:51
...
Java内存泄露原因详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，通常一个应用当中会用到很多监听器，我们会调用一个控件的诸如addXXXListener()等方法来增加监听器，但往往在释放对象的时候却没有记住去删除这些监听器，从而增加了内存泄漏的机会。
4、各种连接
比如数据库连接（dataS...
Error Domain=NSURLErrorDomain Code=-1005 “The network connection was lost.”
...mulator reset and to restart the Mac. I often change places with different wifi spots and this is a procedure that fixes the issue for me.
– Vladimír Slavík
Oct 29 '15 at 10:18
...
Detect if Android device has Internet connection
...y, to use a known hack that Android already uses to check if the connected WiFi network has Internet access. This is a lot more efficient over grabbing the entire Google home page. See here and here for more info.
public static boolean hasInternetAccess(Context context) {
if (isNetworkAvailable...
How to check if Location Services are enabled?
... saw this first-hand with a phone I was testing with, and even though both Wifi and GPS were enabled they appeared dead... to my app. Unfortunately, I since enabled the setting and can no longer reproduce the original scenario, even when disabling that "Access to my location" setting. So I can't say...
Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...p，而不是注册事件回调的方式，所以需要在RTD中使用timer控件去主动拉去请求，然后请求处理完成之后，将结果存储到对象中，然后调用UpdateNotify方法通知Excel来更新。RTD函数其实是一个注册为Com组件的类库，所以我们首先创建...
Proper way to exit iPhone application?
...ure of the problem and possible actions the user could take — turning on WiFi, enabling Location Services, etc. Allow the user to terminate the application at their own discretion.
WARNING: Do not call the exit function. Applications calling exit will appear to the user to have crashed, ...
How to connect android emulator to the internet
... @Iammesol, I believe step 3 means drag you active connection name (say wifi / ethernet) to top. At least it worked for me.
– Himel Nag Rana
Jan 19 '17 at 4:23
add a commen...