一個簡單且很好用的php分頁類_PHP

複製代碼 代碼如下:
class Page {
// 分頁欄每頁顯示的頁數
public $rollPage = 6;
// 頁數跳轉時要帶的參數
public $parameter ;
// 預設列表每頁顯示行數
public $listRows = 20;
// 起始行數
public $firstRow ;
// 分頁總頁面數
protected $totalPages ;
// 總行數
protected $totalRows ;
// 當前頁數
protected $nowPage ;
// 分頁的欄的總頁數
protected $coolPages ;
// 分頁顯示定製
protected $config = array(
'redirect'=>false,
'header'=>'條記錄',
'prev'=>'上一頁',
'next'=>'下一頁',
'first'=>'1',
'last'=>'最後一頁',
'theme'=>' %upPage% %first% %prePage% %linkPage% %nextPage% %downPage% 共 %totalPage% 頁');
// 預設分頁變數名
protected $varPage;

/**
+----------------------------------------------------------
* 架構函數
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param array $totalRows 總的記錄數
* @param array $listRows 每頁顯示記錄數
* @param array $parameter 分頁跳轉的參數
+----------------------------------------------------------
*/
public function __construct($totalRows,$listRows='',$parameter='') {
$this->totalRows = $totalRows;
$this->parameter = $parameter;
$this->varPage = C('VAR_PAGE') ? C('VAR_PAGE') : 'p' ;
if(!empty($listRows)) {
$this->listRows = intval($listRows);
}
$this->totalPages = ceil($this->totalRows/$this->listRows); //總頁數
$this->coolPages = ceil($this->totalPages/$this->rollPage);
//$_GET驗證
$this->nowPage = intval($_GET[$this->varPage]);
$this->nowPage = $this->nowPage > 0 ? $this->nowPage : 1;

if(!empty($this->totalPages) && $this->nowPage>$this->totalPages) {
$this->nowPage = $this->totalPages;
}
$this->firstRow = $this->listRows*($this->nowPage-1);
}

public function setConfig($name,$value) {
if(isset($this->config[$name])) {
$this->config[$name] = $value;
}
}

/**
+----------------------------------------------------------
* 分頁顯示輸出
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
*/
public function show() {

if(0 == $this->totalRows) return '';

//處理參數
$p = $this->varPage;
$url = $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':"?").$this->parameter;
$parse = parse_url($url);
if(isset($parse['query'])) {
parse_str($parse['query'],$params);
unset($params[$p]);
$url = $parse['path'].'?'.http_build_query($params);
}

/* 分頁邏輯 */

//當總數小於顯示的頁碼數
if ($this->totalPages <= $this->rollPage) {
$start = 1;
$end = $this->totalPages;
}
else{
//
if ($this->nowPage <= $this->rollPage - 1) {
$start = 1;
$end = $this->rollPage;

$islast = true;
}
else if ($this->nowPage > $this->totalPages - $this->rollPage + 1) {
$start = $this->totalPages - ($this->rollPage - 1);
$end = $this->totalPages;

$isfirst = true;
}
else{
//浮動數
$size = floor($this->rollPage / 2);

$start = $this->nowPage - $size;
$end = $this->nowPage + $size;

$isfirst = true;
$islast = true;
}
}

//上下翻頁字串
$upRow = $this->nowPage - 1;
$downRow = $this->nowPage + 1;


/* 拼裝HTML */

//< 1... ...last >
if ($isfirst){
$theFirst = "".$this->config['first']."";
}
if ($islast){
$theEnd = "totalPages' >".$this->config['last']."";
}

if ($upRow > 0){
$upPage = "".$this->config['prev']."";
}

if ($downRow <= $this->totalPages){
$downPage = "".$this->config['next']."";
}

if($start==3){
$linkPage .= "2";
}
if($start>=4){
$linkPage .= "2 ...";
}
//1 2 3 4 5
for($i=$start;$i<=$end;$i++){
if($i!=$this->nowPage){
$linkPage .= " ".$i." ";
}else{
$linkPage .= " ".$i."";
}
if($i==$end){
if($i<$this->totalRows){
$linkPage .= " ...";
}
}
}

$pageStr = str_replace(
array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%first%','%prePage%','%linkPage%','%nextPage%','%downPage%','%end%'),
array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$upPage,$theFirst,$prePage,$linkPage,$nextPage,$downPage,$theEnd),$this->config['theme']);

//顯示模式 普通false 帶跳轉ture
if (!empty($this->config['redirect'])){
$html = $pageStr;

}else{
//傳遞參數
if($this->totalPages > 1){
$redirect = " 到第 ';
}else{
$redirect = $redirect . '';
}
}
//產生Html字串
$html = $pageStr . $redirect;
}
return $html;
}

}

