Big God help younger brother I look down, little brother my query page class is wrong what the page class

God help me to see, my query paging class where the wrong page class

This is page.class.php.

 Class dividepage{//Pagination Classes
private $total;//The total number of records to display
private $url;//URL of the requested address
private $DISPLAYPG;//The number of records displayed per page, by default 10 records per page
private $page;//Current page
private $LASTPG;//Total pages, or page number of the last page
private $PREPG;//Previous Page
private $NEXTPG;//Next page
private $firstcount;//The starting number of the record bar starts at 0
private $STARTD;//record number at the beginning of the record bar.
private $stopd;//record number at the end of the record number.

constructor function
Public function __construct ($url, $total, $DISPLAYPG) {
$this->url = $url;//URL of the request
$this->total = $total;//Total Record Count
if ($DISPLAYPG = = ")
$this->DISPLAYPG = $DISPLAYPG;//The number of records displayed per page
$this->initdividepage ();//Initialize page-Paging class
Echo ', '. $this->displaypg;
}

Initializing the Paging class
Private Function Initdividepage () {
Parsing URLs
$parse _url = Parse_url ($this->url);//The URL is interpreted as an array with fixed key-value pairs
$url _query = $parse _url[' query '];//take out the query string in the URL
if ($url _query) {//If there is a query string, delete the query field for the current page in the query strings such as: &page= $page or page= $page
Ereg (' (^|&) page= ([0-9]*) ', $url _query, $k);
$this->page = $k [2];//Gets the value of the current page
$url _query = ereg_replace ("(^|&) page= $this->page", ", $url _query);//delete the query field of the current page in the query string such as: &page= $page or page= $page
$this->url = str_replace ($parse _url[' query '], $url _query, $this->url);//Keep other query strings,
$this->page = $this->page? $this->page:1;//If the value of the current page is not in the query string, the current page is set to 1
if ($url _query) {//If there are other query strings, add a page-up query string in &page= $page form
$this->url. = ' &page ';
}else{//If there are no additional query strings, add a page-up query string in the form of page= $page
$this->url. = ' page ';
}
}else{//If there is no query string, add it after the URL? page= $page form of page-turn query string
$this->page = 1;
$this->url. = '? page ';
}
$this->LASTPG = ceil ($this->total/$this->displaypg);//Calculate the total number of pages, that is, the last page
$this->page = min ($this->lastpg, $this->page);//If the current page is greater than the total number of pages, the current page is the last page
$this->PREPG = $this->page-1;//Previous page minus one for the current page
$this->NEXTPG = $this->page + 1;//(($this->page = = $this->lastpg)? $this->lastpg: ($this->page + 1)); /next page for the current page plus one, if the current page is the last page, the next page is 0
$this->firstcount = ($this->page-1) * $this->displaypg;//calculates the current page, the record number of the record number, starting at 0.
$this->STARTD = $this->total? ($this->firstcount + 1): 0;//record start number starting from 1
$this->stopd = min ($this->firstcount + $this->displaypg, $this->total);//Record End number
Echo $this->displaypg;
echo $this->nextpg. ' +=+= '. $this->lastpg;
}

Public Function GetPageInfo () {//Gets the basic information of the current page, such as: Display 第1-10条 record, total 23 records.
Return 'showing the " . $this->startd. '-' $this->stopd. ' Records, Total '. $this->total. ' Record. ';
}

Public Function Getcommonpagenav () {//Gets the usual paging navigation, such as: Home previous next last page
$commonnav = ";
if ($this->lastpg = = 1) {//If there is only one page, then return to flip Navigation, exit, do not display next page, previous page, etc...
return $commonnav;
Break
}
$commonnav = ' URL. ' =1 "class=" Compagestyle "> Home";//Set home navigation, page=1
if ($this->prepg) {
$commonnav. = ' URL. ' = '. $this->prepg. ' "class=" Compagestyle "> Previous page";
}else{
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