Php paging code error (only 27 points left)

An error occurred while turning php code. (Only the last 27 points left) the running result shows only the first page of the database content, and the "next page" is still displayed on the first page. & Lt ;? Php $ pages = ceil ($ count/$ list_num); & nbsp; & php paging code error. please consult with us. (Only 27 points left)
The running result only displays the first page of the database content. clicking "next page" still stays on the first page.

 $ Pages = ceil ($ count/$ list_num );
Echo"
 
  
 
  
 
  
   
There are currently a total of ". $ count." records
   

   
    
Total ". $ pages." pages";
    
If ($ offset ){
    
$ Preoffset = $ offset-$ list_num;
    
Print"
    
     
Previous Page";}
     
Else {
     
Echo"
     
      
Previous Page";
      
}
      
$ Newoffset = $ offset + $ list_num;
      
If ($ pages! = 0) & ($ newoffset/$ list_num )! = $ Pages ))
      
{
      
Print ("
      
        Next page");
       
}
       
Else {echo"
       
         Next page";}
        
$ Pageno = ($ offset/$ list_num) + 1;
        
Echo"
        
          The
         
           Page
          

             ";
           
?>
          
         
        
       
      
     
    
   
  
 

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------ Solution --------------------
I don't know how to write the SQL statements of the database.
Select * from 'table' order by id desc limit 1 $ offset * $ count/$ list_num, ($ offset + 1) * $ count/$ list_num
The following code has been tested in my own database and can be run

 If ($ _ GET [offset]) {
$ Offset = $ _ GET [offset];
}
$ Count = 100;
$ List_num = 5;
$ Pages = ceil ($ count/$ list_num );
Echo"
 
  
 
  
 
  
   
There are currently a total of ". $ count." records
   

   
    
Total ". $ pages." pages";
    

    

    
If ($ offset ){
    
$ Preoffset = $ offset-1;
    
Print"
    
     
Previous Page";}
     
Else {
     
Echo"
     
      
Previous Page";
      
}
      
$ Newoffset = $ offset + 1; // $ list_num;
      

      

      
If ($ pages! = 0) & ($ newoffset/$ list_num )! = $ Pages ))
      
{
      
Print ("
      
        Next page");