本文實例講述了PHP實現的簡單分頁類及用法。分享給大家供大家參考，具體如下：
<?php/* * 使用: * $page = new Page(連接符,查詢語句,當前頁碼,每頁大小,頁碼符) * 連接符:一個MYSQL連接標識符,如果該參數留空,則使用最近一個連接 * 查詢語句:SQL語句 * 當前頁碼:指定當前是第幾頁 * 每頁大小:每頁顯示的記錄數 * 頁碼符:指定當前頁面URL格式 * * 使用例子: * $sql = "select * from aa"; * $page = new Page($conn,$sql,$_GET['page'],4,"?page="); * * 獲得當前頁碼 * $page->page; * * 獲得總頁數 * $page->pageCount; * * 獲得總記錄數 * $page->rowCount; * * 獲得本頁記錄數 * $page->listSize; * * 獲得記錄集 * $page->list; * 記錄集是一個2維數組,例:list[0]['id']訪問第一條記錄的id字段值. * * 獲得頁碼列表 * $page->getPageList(); */class Page{ //基礎數據 var $sql; var $page; var $pageSize; var $pageStr; //統計數據 var $pageCount; //頁數 var $rowCount; //記錄數 //結果數據 var $list = array(); //結果行數組 var $listSize ; //構造函數 function Page($conn,$sql_in,$page_in,$pageSize_in,$pageStr_in) { $this->sql = $sql_in; $this->page = intval($page_in); $this->pageSize = $pageSize_in; $this->pageStr = $pageStr_in; //頁碼為空或小于1的處理 if(!$this->page||$this->page<1) { $this->page = 1; } //查詢總記錄數 $rowCountSql = preg_replace("/([/w/W]*?select)([/w/W]*?)(from[/w/W]*?)/i","$1 count(0) $3",$this->sql); if(!$conn) $rs = mysql_query($rowCountSql) or die("bnc.page: error on getting rowCount."); else $rs = mysql_query($rowCountSql,$conn) or die("bnc.page: error on getting rowCount."); $rowCountRow = mysql_fetch_row($rs); $this->rowCount=$rowCountRow[0]; //計算總頁數 if($this->rowCount%$this->pageSize==0) $this->pageCount = intval($this->rowCount/$this->pageSize); else $this->pageCount = intval($this->rowCount/$this->pageSize)+1; //SQL偏移量 $offset = ($this->page-1)*$this->pageSize; if(!$conn) $rs = mysql_query($this->sql." limit $offset,".$this->pageSize) or die("bnc.page: error on listing."); else $rs = mysql_query($this->sql." limit $offset,".$this->pageSize,$conn) or die("bnc.page: error on listing."); while($row=mysql_fetch_array($rs)) { $this->list[]=$row; } $this->listSize = count($this->list); } /* * getPageList方法生成一個較簡單的頁碼列表 * 如果需要定制頁碼列表,可以修改這里的代碼,或者使用總頁數/總記錄數等信息進行計算生成. */ function getPageList() { $firstPage; $previousPage; $pageList; $nextPage; $lastPage; $currentPage; //如果頁碼>1則顯示首頁連接 if($this->page>1) { $firstPage = "<a href=/"".$this->pageStr."1/">首頁</a>"; } //如果頁碼>1則顯示上一頁連接 if($this->page>1) { $previousPage = "<a href=/"".$this->pageStr.($this->page-1)."/">上一頁</a>"; } //如果沒到尾頁則顯示下一頁連接 if($this->page<$this->pageCount) { $nextPage = "<a href=/"".$this->pageStr.($this->page+1)."/">下一頁</a>"; } //如果沒到尾頁則顯示尾頁連接 if($this->page<$this->pageCount) { $lastPage = "<a href=/"".$this->pageStr.$this->pageCount."/">尾頁</a>"; } //所有頁碼列表 for($counter=1;$counter<=$this->pageCount;$counter++) { if($this->page == $counter) { $currentPage = "<b>".$counter."</b>"; } else { $currentPage = " "."<a href=/"".$this->pageStr.$counter."/">".$counter."</a>"." "; } $pageList .= $currentPage; } return $firstPage." ".$previousPage." ".$pageList." ".$nextPage." ".$lastPage." "; }}?> 用法示例：
<?php@$db = mysql_connect('localhost', 'root', '123456') or die("Could not connect to database.");//連接數據庫mysql_query("set names 'utf8'");//輸出中文mysql_select_db('test'); //選擇數據庫$sql = "select * from `users`"; //一個簡單的查詢$page = new Page('',$sql,$_GET['page'],5,"?page=");$rows = $page->list;foreach($rows as $row){ echo $row['UserName']."<br>";}echo $page->getPageList(); //輸出分頁列表?> 
