The novice asks a paging class for an output loop that shows the paging encounters problems, solves

Novice question one output cycle of the paging class shows that the page is experiencing problems solving?

 Class Pageclass {
Private $total _record;//Total records
Private $page _size;//page record Count
Private $current _page;//Current page
Private $total _page_size;//Total pages
Private $page _url; Page URL
Private $page _start; Start Page
Private $page _stop;//End page
Public $page _limit; Limit
function __construct ($total _record=0, $page _size=1, $current _page=1, $page _url) {
$this->total_record= $this->numeric ($total _record);
$this->page_size= $this->numeric ($page _size);
$this->current_page= $this->numeric ($current _page);
$this->page_limit= ($this->current_page* $this->page_size)-$this->page_size;
$this->page_url= $page _url;
if ($this->current_page<1) {
$this->current_page=1;
}

if ($this->current_page<0) {
$this->current_page=0;
}
$total _page_size = ceil ($total _record/$page _size);

if ($this->total_page_size<1) {
$this->total_page_size=1;
}
if ($this->current_page> $this->total_page_size) {
$this->crrent_page= $this->total_page_size;
}
$this->page_start= $this->current_page;
$this->page_stop= $this->current_page+5;
if ($this->page_stop> $this->total_page_size) {
$this->page_stop= $this->total_page_size;
$this->page_start= $this->page_stop-5;
}
if ($this->page_start<1) {
$this->page_start=1;
if ($this->page_stop > $this->total_page_size) {
$this->page_stop= $this->total_page_size;
}
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