PHP pagination if empty do nothing and formatting -


i have built search function site, pagination.firstly, have error show if user has not entered or has entered 1 character. want error work once 'go' /submit has been pressed.

secondly, page count displaying want few lines gap between results , page count, visually clear users.

i have tried:<br> <br />``echo "\n" etc. way establish break if put echo "hello
", isnt want obviously, trial , error.

i have included code:

<?php session_start(); include "includes/header.php"; include "includes/connect.php"; ?> <link rel="stylesheet" type="text/css" href="css/generalstyle.css"> <div id = "searchbar">     <form action="search.php" method="get">         search : <input type="text" size="30" name="search" />         <input type="submit" name = "submit" value ="go"/>     </form> </div><!--end search bar-->  <?php  $button = $_get ['submit']; $search = $_get ['search'];   if(strlen($search)<=1)     echo "search term short"; else{     echo "<br><br>you searched <b>$search</b> <hr size='1'></br>";      $fullrecords = "select * apps applicationname like'%$search%' or applicationdescription '%$search%';";                        $fullresult = mysqli_query($conn, $fullrecords);     $foundnum = mysqli_num_rows($fullresult);      if ($foundnum==0)         echo "sorry, there no matching applications <b>$search</b>.</br></br>1. try more general words. example: if want search 'how write notes'then use general keywords 'notes' or 'write'.</br>2. try different words similar meaning.</br>3. please check spelling , try again.";     else{          echo "$foundnum results found !<p>";          $per_page = 9;         $start = $_get['start'];         $max_pages = ceil($foundnum / $per_page);          if(!$start)             $start=0;              $getquery = mysqli_query($conn, "select applicationid, applicationname, applicationdescription apps applicationname '%$search%' or applicationdescription '%$search%' limit $start, $per_page;");          while($row = $getquery->fetch_object()){             $_get['search']=$_post['search'];             echo "<div class=\"col-6 col-sm-6 col-lg-4\">";             echo '<form method="post" action="cart_update.php">';             echo '<h2>'.$row->applicationname.'</h2>';             echo '<p>'.$row->applicationdescription.'</p>';             echo '<button class="add_to_cart">add cart</button>';             echo '<input type="hidden" name="product_code" value="'.$row->applicationid.'" />';             echo '<input type="hidden" name="type" value="add" />';             echo '<input type="hidden" name="return_url" value="'.$current_url.'" />';             echo '</form></div>';             }           }     //pagination starts     echo "<center>";     $prev = $start - $per_page;     $next = $start + $per_page;                          $last = $max_pages - 1;     if($max_pages > 1){        //previous button         if (!($start<=0))              echo "<a href='search.php?search=$search&submit=search+source+code&start=$prev'>prev |</a> ";                          //pages          $i = 0;            ($counter = 1; $counter <= $max_pages; $counter++){             if($i == $start){             echo " <a href='search.php?search=$search&submit=search+source+code&start=$i'><b> $counter |</b></a> ";             }             else {                 echo " <a href='search.php?search=$search&submit=search+source+code&start=$i'> $counter |</a> ";             }           $i = $i + $per_page;                          }     }       //next button if (!($start >=$foundnum-$per_page))     echo " <a href='search.php?search=$search&submit=search+source+code&start=$next'> next</a> ";     }    echo "</center>";


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