Style of pagination php - php

Question

I have an pagination code:
//pagination
$result1=$mysqli->query("SELECT * FROM product");
$row_per_page=10 ;
$rows=$result1->num_rows;
if ($rows>$row_per_page) $page=ceil($rows/$row_per_page);
else $page=1;
if(isset($_GET['start']) && (int)$_GET['start'])
$start=$_GET['start'];
else
$start=0;
$result=$mysqli->query("SELECT * FROM product limit $start,$row_per_page");
//End pagination
while ($rows = $result->fetch_assoc()) {
echo $rows['name'];
}
$page_cr=($start/$row_per_page)+1;
for($i=1;$i<=$page;$i++)
{
if ($page_cr!=$i) echo "<div class='pagination'>"."<a href='index.php?go=product&start=".$row_per_page*($i-1)."'>$i </a>"."</div>";
else echo "<div class='pagination'>".$i." "."</div>";
}
This code create pagination like this
Yeah, i want to remove 6 7 8 9 ect... and replace with "...". When i click to page 6, it will remove 1 2 3 4 5 - 10 11 12 13 etc..,it only show 6 7 8 9 as image below
[![Pagination][2]][2]
I hope you can understand my ideal, i try the best to show you.
Thank you so much

Answer 1

Here's a solution to your pagination problem, the kind of solution Google uses to paginate it's search results. Basically, the idea behind this solution is this:
At any point of time, at most 5 pagination links will be displayed i.e. from the current page's perspective, display two predecessor and successor pages. Let me explain this thing using two scenarios,
Case(1): When the number of pages is equal to or less than 5 (Lets say we have 4 pages)
In this case, we have to display all pagination links without any preceding or succeeding dots, like this:
// User is on page 1
1 2 3 4
- - -
// User is on page 3
1 2 3 4
- - -
// User is on page 4
1 2 3 4
- - -
Case(2): When the number of pages is greater than 5 (Lets say we have 10 pages)
In this case, we have to display both the pagination links and dots accordingly, like this:
// User is on page 1
1 2 3 4 5 ...
- - - -
// User is on page 5
... 3 4 5 6 7 ...
- - - -
// User is on page 10
... 6 7 8 9 10
- - - -
So after getting the current page number using $page_cr=($start/$row_per_page)+1;, the algorithm of this custom pagination system would be like this:
Check whether the number of pages is greater than 5 or not. If it's greater than 5, go to step 2 otherwise go to step 5.
Find the superset range of pages, like 1-10, or 1-20 etc. For example, if $page = 10 then this superset range would be 1-10. The code for this step is this:
// Superset range of pages
$superset_range = range(1, $page);
Find the subset range of pages to display, like 1-5, or 3-7 etc. For example, if $page = 10 then this subset range would be 1-5, or 3-7, or 6-10 etc., it can be any consecutive five page between 1 and 10. Also, adjust this range whenever necessary. The code for this step is this:
// Subset range of pages to display
$subset_range = range($page_cr - 2, $page_cr + 2);
// Adjust the range
foreach($subset_range as $p){
if($p <= 0){
array_shift($subset_range);
$subset_range[] = $subset_range[count($subset_range) - 1] + 1;
}elseif($p > $page){
array_pop($subset_range);
array_unshift($subset_range, $subset_range[0] - 1);
}
}
Display the pagination links and dots accordingly. The code for this step is this:
// Display pagination links and dots
if($subset_range[0] > $superset_range[0]){
echo "<div class='pagination'>... </div>";
}
foreach($subset_range as $p){
if($page_cr != $p){
echo "<div class='pagination'>"."<a href='index.php?go=product&start=".$row_per_page*($p-1)."'>$p </a>"."</div>";
}else{
echo "<div class='pagination'>".$p." "."</div>";
}
}
if($subset_range[count($subset_range) - 1] < $superset_range[count($superset_range) - 1]){
echo "<div class='pagination'> ...</div>";
}
Display all pagination links using your old code, like this:
// Display all page links
for($i = 1; $i <= $page; $i++){
if($page_cr != $i){
echo "<div class='pagination'>"."<a href='index.php?go=product&start=".$row_per_page*($i-1)."'>$i </a>"."</div>";
}else{
echo "<div class='pagination'>".$i." "."</div>";
}
}
So here's the complete code:
$result1 = $mysqli->query("SELECT * FROM product");
$row_per_page= 10;
$rows=$result1->num_rows;
if ($rows > $row_per_page){
$page=ceil($rows/$row_per_page);
}else{
$page=1;
}
if(isset($_GET['start']) && (int)$_GET['start']){
$start=$_GET['start'];
}else{
$start=0;
}
$result=$mysqli->query("SELECT * FROM product limit $start,$row_per_page");
while ($rows = $result->fetch_assoc()) {
echo $rows['name'];
}
$page_cr=($start / $row_per_page) + 1; // Page number
if($page > 5){
// From the current page's perspective, display two predecessor and successor pages
// Superset range of pages
$superset_range = range(1, $page);
// Subset range of pages to display
$subset_range = range($page_cr - 2, $page_cr + 2);
// Adjust the range
foreach($subset_range as $p){
if($p <= 0){
array_shift($subset_range);
$subset_range[] = $subset_range[count($subset_range) - 1] + 1;
}elseif($p > $page){
array_pop($subset_range);
array_unshift($subset_range, $subset_range[0] - 1);
}
}
// Display pagination links and dots
if($subset_range[0] > $superset_range[0]){
echo "<div class='pagination'>... </div>";
}
foreach($subset_range as $p){
if($page_cr != $p){
echo "<div class='pagination'>"."<a href='index.php?go=product&start=".$row_per_page*($p-1)."'>$p </a>"."</div>";
}else{
echo "<div class='pagination'>".$p." "."</div>";
}
}
if($subset_range[count($subset_range) - 1] < $superset_range[count($superset_range) - 1]){
echo "<div class='pagination'> ...</div>";
}
}else{
// Display all page links
for($i = 1; $i <= $page; $i++){
if($page_cr != $i){
echo "<div class='pagination'>"."<a href='index.php?go=product&start=".$row_per_page*($i-1)."'>$i </a>"."</div>";
}else{
echo "<div class='pagination'>".$i." "."</div>";
}
}
}