Pagination function

pagination.php

function pagination($total, $per_page, $page, $start){
    $requiredPages = ceil($total/$per_page);
    $whichPage= $start/$per_page+1;
    $start = "-".$per_page;
    echo "<ul class='pagination'><li>Page</li>";
 
    for ($i = 1; $i <= $requiredPages; $i++) {
        $start = $start+$per_page;
        if($i==$whichPage){
            echo '<li class="active">'.$i."</li>";
        }
        else {
            echo "<li><a href='".SITE_URL.$page."/".$start."'>".$i."</a></li>";
        }
    }
 
    echo "</ul>";
}