MySQL

Here's an example of how to display MySQL Database Records with Bootstrap Pagination and CSS Styling:

Pirates of the Caribbean: At World's End (2007)
Captain Barbossa, long believed to be dead, has come back to life and is headed to the edge of the Earth with Will Turner and Elizabeth Swann. But nothing is quite as it seems.
PHP
<div class="demo-container">
<?php
$conn = new mysqli ("server", "user", "password", "database");
mysqli_set_charset ($conn, "utf8");
if ($conn -> connect_error) {die ("Database Connection Error!");}

$adjacents = 2;
$query_c = "SELECT id, title, overview, popularity, date_format(release_date, '%Y') AS release_date FROM top_100_movies ORDER BY popularity DESC LIMIT 0, 140";
$result_c = mysqli_query($conn, $query_c);
$row_count = $result_c->num_rows;
$total_pages = $row_count;
$target_page = "";
$item_display_limit = 1;
$pgNr = $_GET['page']; 

if ($pgNr) 
$page_start = ($pgNr - 1) * $item_display_limit; 
else
$page_start = 0;
$query_r = "SELECT id, title, overview, popularity, date_format(release_date, '%Y') AS release_date FROM top_100_movies LIMIT $page_start, $item_display_limit";
$result_r = $conn->query($query_r); 
if ($pgNr == 0) $pgNr = 1;
$prev_page = $pgNr - 1;
$next_page = $pgNr + 1;
$last_page = ceil($total_pages/$item_display_limit);
$last_page_i = $last_page - 1;

$demoPag = ""; 

if ($last_page > 1) { 
$demoPag .= "<div class='pagination-container'>";
$demoPag .= "<ul class='pagination pagination-sm justify-content-center flex-sm-wrap'>";

if ($pgNr > 1) 
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$prev_page'>«</a></li>";

else
$demoPag.= "<li class='page-item disabled'><a class='page-link' href='#'>«</a></li>"; 

if ($last_page < 7 + ($adjacents * 2)) { 
for ($pgCount = 1; $pgCount <= $last_page; $pgCount++) { 

if ($pgCount == $pgNr)
$demoPag.= "<li class='page-item active'><a class='page-link disabled' href='#'>$pgCount</a></li>"; 

else
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$pgCount'>$pgCount</a></li>"; 
} 
}

elseif($last_page > 5 + ($adjacents * 2)) {

if ($pgNr < 1 + ($adjacents * 2)) {
for ($pgCount = 1; $pgCount < 4 + ($adjacents * 2); $pgCount++){

if ($pgCount == $pgNr)
$demoPag.= "<li class='page-item active'><a class='page-link disabled' href='#'>$pgCount</a></li>"; 

else
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$pgCount'>$pgCount</a></li>"; 
} 
$demoPag.= "<span class='pagination-dots'>...</span>";
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$last_page_i'>$last_page_i</a></li>";
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$last_page'>$last_page</a></li>"; 
} 

elseif ($last_page - ($adjacents * 2) > $pgNr && $pgNr > ($adjacents * 2)) {
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=1'>1</a></li>";
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=2'>2</a></li>";
$demoPag.= "<span class='pagination-dots'>...</span>";
for ($pgCount = $pgNr - $adjacents; $pgCount <= $pgNr + $adjacents; $pgCount++) {

if ($pgCount == $pgNr)
$demoPag.= "<li class='page-item active'><a class='page-link disabled' href='#'>$pgCount</a></li>"; 

else $demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$pgCount'>$pgCount</a></li>"; 
} 
$demoPag.= "<span class='pagination-dots'>...</span>";
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$last_page_i'>$last_page_i</a></li>";
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$last_page'>$last_page</a></li>"; 
} 

else {$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=1'>1</a></li>";
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=2'>2</a></li>";
$demoPag.= "<span class='pagination-dots'>...</span>";
for ($pgCount = $last_page - (2 + ($adjacents * 2)); $pgCount <= $last_page; $pgCount++) {

if ($pgCount == $pgNr)
$demoPag.= "<li class='page-item active'><a class='page-link disabled' href='#'>$pgCount</a></li>"; 

else $demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$pgCount'>$pgCount</a></li>"; 
} 
}
}

if ($pgNr < $pgCount - 1) 
$demoPag.= "<li class='page-item'><a class='page-link' href='$target_page?page=$next_page'>»</a></li>"; 

else $demoPag.= "<li class='page-item disabled'><a class='page-link disabled' href='#'>»</a></li>";
$demoPag.= "</div>\n";
$demoPag.= "</ul>\n"; 
}
?>

<?php
if ($result_r->num_rows > 0) {
while ($row = $result_r->fetch_assoc()) {
echo "<div class='demo-content'>"; 
echo "<div class='demo-content-header'>" . $row["title"] . " (" . $row["release_date"] . ")</div>"; 
echo "<div class='demo-content-body'>" . $row["overview"] . "</div>";
echo "</div>"; 
}
} 

else {
echo 'No Records Available';
echo "</div>"; 
} 
?>
</div>

<div class="pagination-container">
<?=$demoPag?>
</div>