PHP Printing 50 rows on per page - php

Question

I am working on my PHP to fetch the data from mysql database to output them in the search results. I want to limit 50 rows in per page and if I have less than 50 rows like 21 rows in the page 2 then display the 21 rows.
I have got a problem with the limit, because when I tried to use LIMIT 0, 50, it will display total 71 rows which I only want to display no more than 50 in per page.
Here is what I have tried:
$search_mailbox = $link->prepare("SELECT * FROM $folder WHERE from_email LIKE ? OR subject LIKE ? OR message LIKE ? ORDER BY received_date DESC LIMIT 0, 50");
$search_mailbox->execute([$searchemail, $searchsubject, $searchmessage]);
And I have also tried this:
$search_mailbox = $link->prepare("SELECT * FROM $folder WHERE from_email LIKE ? OR subject LIKE ? OR message LIKE ? ORDER BY received_date DESC LIMIT $offset, $limit");
$search_mailbox->execute([$searchemail, $searchsubject, $searchmessage]);
It will not limit the rows I want. It will still show the 71 rows.
Here is the full code:
<?php
// Initialize the session
session_start();
//Connect to the database
require_once('config.php');
$searchemail = '%' . 'gmail.com' . '%';
$searchsubject = '%' . 'gmail.com' . '%';
$searchmessage = '%' . 'gmail.com' . '%';
$mailbox = $link->prepare("SHOW TABLES");
$mailbox->execute();
$folders = array();
$total = 0;
$total_rows = 0;
$i = 0;
while ($folder = $mailbox->fetch(PDO::FETCH_NUM)) {
$folder = $folder[0];
if (strpos($folder, 'users') !== false) {
$folder = str_replace('users', '', $folder);
}
else
{
$folders[$i] = $folder;
}
$i++;
}
foreach($folders as $folder) {
$search_mailbox = $link->prepare("SELECT * FROM $folder WHERE from_email LIKE ? OR subject LIKE ? OR message LIKE ? ORDER BY received_date DESC LIMIT 0, 50");
$search_mailbox->execute([$searchemail, $searchsubject, $searchmessage]);
if ($search_mailbox->rowCount() > 0) {
$total += $search_mailbox->rowCount();
}
}
$page = 1;
$limit = 50;
//$per_page = 50;
//$pages = ceil($total / $per_page);
$offset = ($page - 1) * $limit;
foreach($folders as $folder) {
$search_mailbox = $link->prepare("SELECT * FROM $folder WHERE from_email LIKE ? OR subject LIKE ? OR message LIKE ? ORDER BY received_date DESC LIMIT $offset, $limit);
$search_mailbox->execute([$searchemail, $searchsubject, $searchmessage]);
if ($search_mailbox->rowCount() > 0) {
foreach($search_mailbox->fetchAll() as $k => $row) {
$email_number = $row['id'];
$search_from = $row['from_email'];
$search_subject = $row['subject'];
$total_rows++;
echo $search_subject . '.........................' . $total_rows;
echo "<br>";
}
}
}
?>
I am unable to fetch the first 50 rows in the page 1 and I am also unable to fetch the 21 rows in the page 2.
What I am trying to achieve is when I am in page 1, I want to display the first 50 rows, then in the page 2 if I have another 50 rows then display the 50 rows, but if I have less than 50 rows like 21 rows then display the 21 rows.
Can you please show me an example how I can start with first 50 rows when I am in the page 1 then in page 2 display 21 rows to make in total 71 rows?
Thank you.