分页：获取总页数

Question

I am making a web service for an application

I have a SQL Query which gets data in pagination manner.

I want the total number of pages for the data I get.

  $limit = 10; // limit of 10 records $offset = ($page_number -1) * $limit; // calculate offset $userQuery="SELECT faq_question, faq_answer FROM `faq` WHERE faq_event_id = $event_id LIMIT $limit OFFSET $offset"; 

Above is my Query.

$page_number would be a parameter to be passed.

How can I get total number of page used to display all data based on certain condition.

Thank You.

Answer 1

// I guess you use mysqli
// use another query without limitation
$result = $mysqli->query("SELECT faq_question, faq_answer FROM `faq` WHERE faq_event_id = $event_id");

// total row count
$row_cnt = $result->num_rows; 

// total pages
$pages = ceil($row_cnt/$limit);  

What I did here, first calculate total rows in database, then I divided total number of rows using limit. I used ceil for round value to up.( echo ceil(6.3); // 7 pages)

Answer 2

You should have to get count of all records and then apply calculation on that.

count(total_records)/total_records_per_page

it will give you the total pages which you want to get