分页最后一页和第一页php

Question

I am new to pagination and have managed to get this:

Now i want if the page is = 0 it must go back to page 1, and the last page should just be looping

i want the following :

(1) if no page var is given, default to 1. (2) previous page is page - 1 (3) previous page is page - 1 (4) next page is page + (5) last page should be equals to $total_pages

   <?php
      $limit = 6;
      if (isset($_GET["page"]))
       {
       $page  = $_GET["page"];
       } else
       {
      $page = 1;
       };

     $total_records = $pagination;
     $total_pages = ceil($total_records/$limit);

     if($page = 0)
     $page = 1;     
     $prev = $page - 1;                          
     $next = $page + 1;                        

      $pagLink = "<ul class='pagination' class='justify-content-center'>";

      $pagLink .= "<li class='page-item'>
      <a class='page-link' href='home.php?page=".$prev."'   aria-label='Back'>
      <span aria-hidden='true'>&laquo;</span>
      <span class='sr-only'>Next</span>
  </a>
</li>";

  for ($i=1; $i<=$total_pages; $i++) {  

  $pagLink .= "<li class='page-item'><a  class='page-link'    href='home.php?page=".$i."'>".$i."</a></li> ";

   };


     $pagLink .= "<li class='page-item'>
  <a class='page-link' href='home.php?page=".$next."' aria-label='Next'>
    <span aria-hidden='true'>&raquo;</span>
    <span class='sr-only'>Next</span>
  </a>
  </li>";
  echo $pagLink . "</ul>";

   ?>

Answer 1

This should probably be the issue, or at least it is an issue in your code:

if($page = 0)
  $page = 1;     
  $prev = $page - 1;                          
  $next = $page + 1;

This = means assignment, what you are actually saying is that "if assignment of $page = 0 goes well, do the following... So $page is always equal to 1, no matter what. What you actually want is check the variable if it's equal to 0, like this

if($page == 0)
  $page = 1;     
  $prev = $page - 1;                          
  $next = $page + 1;

See the double ==