PHP paging class with multiple paging methods

Class PAGE {
//Start of class
 /***************************************************** ****
* $total total number of records
* $pageNum number of items displayed on each page
* $url = '' link
* $page->StartPage (display category statistics, character category/number paging, jump) ;
* $page->StartPage(true/false, true/false, true/false);
* site http://bbs.it-home.org
************ **********************************************/
private $total; //Total number of records
private $pageNum; //Per page Display number
private $page; //Current number of pages
private $pages; //Total number of pages
private $url; //Page url
private $Aque; //URL parameters

/* Constructor */
 public function PAGE($total, $pageNum, $url='?'){
 $this->total = $total; //Total number of records.
 $this->pageNum = $pageNum; //Per page Display number.
 $this->url = $this->StrSift($url); //Determine whether the value of $url is legal.
 $this->Aque = $_GET; //The parameters originally passed by the page .
 $this->page = $this->StrSift($_GET['page']); //Current page GET (global variable) mode parameters, current page number.
 $this->page = is_numeric( $this->page) ? $this->page : 1; //When the current page number is not a number, set it to 1.
 $this->pages = ceil($total/$pageNum); //Total number of pages.
 if($this->page<1) $this->page = 1; //When the page number is less than 1, set it to 1.
 //if($this- >page>$this->pages) $this->page = $this->pages; //When the page number is greater than the maximum page number, set it to the maximum page number.
}
/********************
* Paging method
*******************/
function StartPage($str, $view=true, $jump=true){
 if($view==true) $PageStr .= $this->GetCount(); //Paging statistics
 if ($str=='str') $PageStr .= $this->GetPageStr(); //Select the character paging format
 else $PageStr .= $this->GetPageNum(); //Select the numeric paging format
 if($jump==true) $PageStr .= $this->JumpSelect(); //Jump
 return $PageStr;
}
/********************************************
* Show statistics. Format: 5 records in total Page: 2/3
****************************************** ***********/
function GetCount(){
 $CountStr = "Total". $this->total ."Records Page:".$this->page."/". $this->pages."  ";
 return $CountStr;
}
/***********************************************
* Pagination format 1: First page Previous page Next page Last page
************************************ ************/
function GetPageStr(){
 $url = $ this->url; //Get the URL
 //Process the URL parameters: the key of the array is the URL variable, and the value of the array is the value of the URL variable.
 foreach($this->Aque as $key => $val){
 switch($key){
 case "page":
 $Next = $val + 1;
 $Prev = $val - 1;
 break;
 default:
 $Sque .= "&$key =".$this->StrSift($val);
 }
 }
 if($Next==0) $Next=2;
 //Home page previous page
 switch($this->page){
 case $this->page<=1:
 $pagestr .= "Homepage  ";
 $pagestr .= "Previous page  ";
 break;
 default:
 $pagestr . = "Homepage  ";
 $pagestr .= "Previous page  ";
 }
 //Next page last page
 switch($this->page){
 case $this->page>=$this->pages:
 $pagestr .= "Next page  ";
 $pagestr .= "Last page  ";
 break;
 default:
 $pagestr .= "Next page  ";
 $pagestr .= "< a href='".$url."?page=$this->pages$Sque'>Last page  ";
 }
 //Return the paging string.
 return $ pagestr;
 }
/***************************************************** *******
* The pagination format is as follows: a total of 4307 record pages: 1/72 1 2 3 4 5 6 7 8 9 10
**************** ********************************************/
function GetPageNum(){
 $url = $this->url;
 //Process the URL parameters: the key of the array is the URL variable , the value of the array is the value of the URL variable.
 foreach($this->Aque as $key => $val){
 switch($key){
 case $key!="page":
 $Sque . = "&$key=".$this->StrSift($val);
 }
 }
 switch($this->pages){
 //The total number of pages is greater than 12 pages:
 case $this-> ;pages>12:
 //Before the paging number: < <<
 switch($this->page){
 case $this->page>1:
 $pagestr .= "< ";
 $pagestr .= "<< ";
 break;
 default:
 $pagestr .= "< ";
 $pagestr . = "<< ";
 }
 //Paging numbers: 1 2 3 4 5 6 There are 6 paging links on the left of the current page number and 6 paging links on the right.
 for($i=$this->page -6; $i<=$this->page+6; $i++){
 if($i>$this->pages) break;
 if($i==$this->page) $ pagestr .= $i." ";
 elseif($i>=1) $pagestr .= "$i< /a> ";
 $pagestr .= ">> ";
 $pagestr .= "> ";
 break;
 default:
 $pagestr .= "> ";
 $pagestr .= ">> ";
 }
 break;
 default:
 //The total number of pages is less than 12 pages:
 for($i=1 ; $i<=$this->pages; $i++){
 switch($i){
 case $i==$this->page:
 $pagestr .= $i." ";
 break;
 default:
 $pagestr .= "$i ";
 }
 }
 }
 //Return the paging string.
 return $pagestr;
}

/**************************
* Define jump page. BEGIN
************************ ******/
function JumpSelect(){
 $url = $this->url;
 //Process the URL parameters: The key of the array is the URL variable, and the value of the array is the value of the URL variable.
 foreach($this->Aque as $key => $val){
 if($key != "page") $Sque .= "&$key=".$this->StrSift($val);
 }
 $SelectStr = "n $SelectStr .= "onChange="window.location='".$url."?page='+this.value+'".$Sque."'">n";
 for($i=1; $i<=$ this->pages; $i++){
 if($i == $this->page) $selected = " selected";
 else $selected = "";
 $SelectStr .= "$in";
 } 
 $SelectStr .= "n";
 //Return the paging string.
 return $SelectStr;
}
/***********************************
* Filter special characters.
************ ************************/
private function StrSift($str){
 $str = str_replace(""","",$str);
 $str = str_replace( "'","",$str);
 $str = str_replace("[url=file://%22,%22%22,$str/]\","",$str[/url]) ;
 $str = str_replace("/","",$str);
 $str = str_replace(":","",$str);
 $str = str_replace("?","",$str ); //Removal will result in "??".
 $str = str_replace(">","",$str);
 $str = str_replace("<","",$str);
 $ str = str_replace("%","",$str);
 $str = str_replace("*","",$str);
 $str = str_replace("&","",$str);
 $str = str_replace(".","",$str);
 return $str;
}
//End of class
}
?>

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