Question

I am looking for application development in such a way that it should work whether the user has an Internet connection or not.

I am working on a mobile PHP/MySQL based application. Sometimes an Internet connection is not available at the required place. I want to keep the database in a buffer and want to update it as it gets connected with the Internet, so that the application can work without any interruptions.

Answer 1

Depending on how much data you need to be persistent on the client’s machine, you might be able to use cookies to save this data.

Here is a simple example of storing some information in cookies

// set the cookies
setcookie("someInfo[key1]", "4815162342");
setcookie("anotherValue", "foobar");

Now, after you have set the cookie, you’ll be able to retrieve the data on other pages from the same domain.

echo $_COOKIE['anotherValue']; 
// prints "foobar"

print_r($_COOKIE['someInfo']);
// Array(
//  'key1'=>"4815162342"
// )

Reference –

• PHP Cookies
• setcookie()