If you want to pass important information from one page to another pages or if you want to store important information like user id, password then PHP session is best option for you.

PHP session is a global variable that is stored on the server. A variable that could be used on various page, that is called session in PHP. Cookies are also worked similar to session but cookies are stored...

Cookies are the small text file that is stored on the client local computer. When client computer requests a page with a browser, then it sends the cookies data to the web server that is reduce the server response time. In PHP, you can create, retrieve and delete cookie values both.

Here, there are 3 steps to identify users by cookies:

1. Server sends a set of cookies to...

Probably you have limited access of your hosting server resources. Your hosting provider is not allowed more mysqli connections and when your class tries to get a new connection then you have got this error because of already you have some running mysqli connections.

This is not a mysqli problem or not a programming problem. This is limited access problem of hosting server.

For...

Usually that happens when you use JOIN for combining multiple table in database. If your mysql query takes more time, then server could give you negative response like

#2013 - Lost connection to MySQL server during query

Or

MySQL server has gone away

SELECT RELEASE_LOCK('b131086dbc463d8c717e59bd41af9cdd914ce035') AS...

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 's neck. It is strong and rust-resistant Buy Trixie Long Link Choke chain, stainl' at line 1

If you are working with PHP, Mysql and you are getting error by single quote in string. It is possible to escape the apostrophe...

There is no official limit decided but generally people mention 100 to 255 characters for keywords. Different type of search engine sets their own rules. If anyone using maximum keywords, it could be considered overstuffing. So you can use less than of 10% of the total words of a single web page. It can be good practice for search engine...