How to get the total number of pages in PHP

How to get the total number of pages in PHP
I have written a PHP page and I am now select * from user limit. ($page-1). ",". $rows can only get to the number of bars each time, I want to get a total of how many, how to obtain, now get is getrownum ();

function Getrownum ()
{
Return mysql_num_rows ($this->res);
}

Require_once ('.. /db/db.php ');
$db =new dataaccess ();
$con = $db->connect ();
$rows = $_post[' rows '];
$page = $_post[' page '];
$sql = "SELECT * from User Limit". ($page-1). ",". $rows; Paged SQL
$result = $db->query ($sql);
$row _num = $db->getrownum ();//can only get to the current number of bars



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The Select COUNT (*) from user needs to be executed individually
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Reference:

Paging is like this BT. I don't usually write it. I directly use the project to write the class, pass the value on the line.


Do not write does not mean that is not the implementation of it. It's just a modesty step, it's normal, you don't read the data from the database, how to know how many pieces of data to prepare the page ...

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