LIMIT在页面中查看数据库中的所有数据

Question

I'm currently making a student's directory using PHP and MYSQL.
However I can't control how many students would register and join the site so I'm having a bit of problem in producing the all_students.php page.

The all_students.php page would get all users from the table called students_users in my database. So normally:

$sql = "SELECT * FROM students_users";
$result = mysqli_query($dbcon,$sql);
while ($data=mysqli_fetch_assoc($result)) {
    $name = $data['name'];
    $age = $data['age'];
...
    echo $name;
    echo $age;
...

It's currently working however I noticed that the more users I got, the page becomes as longer and becoming a burden for the users because they have to scroll down for example to names that starts with letter "T".

Any ideas how can I divide the users to display to a single page (like the search results on Google where it displays about 10 results and then it has this Page 1 | Page 2 | Page 3 |... ?

I already tried this:
"SELECT * FROM students_users Limit 20";
and
"SELECT * FROM students_users LIMIT 20,20"; for the next page and so on

My only problem is that, I don't know how exactly is my number of users will grow and that for example if I have say: 400 users and I want to divide the all_students.php in to viewing theses users using like 10 Pages - Limit 20 will not be enough. I have to use Limit 50 or something right?

How can I make it automatically divides all my users in to displaying within the 10 Pages view?

Example:
10 users - 1 user per page
100 users - 10 users per page
500 users - 50 users per page
etc.

without having to constantly change the Limit code as my number of users grow?

Answer 1

首先，您需要计算总用户数，然后才能计算每页的记录。

Answer 2

Do the tricks to generate limit dynamically . Divide user_count by 10 as you want to ten view page

$sql = " SELECT count(name) as user_count FROM students_users "; 
$result = mysqli_query($dbcon,$sql);
$result = mysqli_fetch_assoc($result);

$number_of_user = $result['user_count'];
$limit = $number_of_user/10;   // Divide user_count by 10 as you want to ten view page 
$limit = round($limit, 0, PHP_ROUND_HALF_DOWN);