How to make an account on the site?

Question

PHP

Hello, I would like to ask, after the user has logged in, it is necessary that only its content be displayed on the page, for example, I have a table <table></table>and buttons for editing the table on the page (Add, Delete, Edit) I have a general table displayed through which login I wouldn’t log in, but how to make it so that when I log in through a certain login, I get exactly his table with the data that a certain user entered there. It's like VKontakte in the likeness of your page, please tell me, thanks in advance.

Answer 1

ok Google, PHP session cookies
and in the database, of course, you need to have the "author" field

Answer 2

if($username){
  $this->getData($username); // Выведутся данные только для пользователя
} else {
  $this->getData($username = false); // Для всех
}

funtion getData($username)
{
  this -> mySql - > select -> ... -> from ...

  if($username){
    this -> mySql - > where ('username', $username);
  }
}

Well, something like this.