php分頁函數(shù) [經典]
Jun 08, 2016 pm 05:32 PM";
/*
??分頁類
??design by xqbar
??qq:174171262
??email:wxddong@163.com
??blog:http://www.xqbar.com
??考慮輸入參數(shù)
??size(每頁記錄數(shù)目)
??url(連接地址)
??style(分頁樣式)
??sql(運行語句)
*/
class page{
? ?public??$sql='';//分頁sql語句
? ?public??$url='';//分頁傳遞過來的下頁地址,可以另外加參數(shù)用來搜索使用
? ?public??$size=10;//默認每頁顯示數(shù)據(jù)10條
? ?public??$style=1;//默認分頁顯示風格
? ?private $totalsize=0;//數(shù)據(jù)總數(shù)
? ?private $totalpage=0;//總頁數(shù)
? ?private $page=1;//當前頁
? ?private $link;//數(shù)據(jù)庫連接點
? ?private $flag=false;//初始化標志點
? ?private $offset=0;//分頁偏移值 limit $offset,$size;
? ?//構造函數(shù) 傳遞數(shù)據(jù)庫連接點
? ?function __construct($link){
? ?? ?$this->page=(isset($_GET['page'])&&!empty($_GET['page'])&&(int)($_GET['page']))?(int)$_GET['page']:1;//獲取當前page參數(shù)值,確定當前是第幾分頁
? ?? ?$this->link=$link;
? ?}
? ?//析構函數(shù)
? ?function __destruct(){
??@mysql_close($this->link);
??$this->link=NULL;
? ?}
??//構造函數(shù)兼顧
? ???$this->__construct($link);
? ?}
? ?//初始化
? ?function init(){
? ???if(empty($this->sql)){$this->halt("錯誤警告:sql語句不能為空!");exit();}//判斷sql是否存在
??$this->sql=str_replace(sql);//">'@_',DB_PREFIX,$this->sql);//替換sql中的表前綴
? ???$this->size=($this->sizesize;//初始每頁顯示數(shù)據(jù)條數(shù)
??$this->page=($this->pagepage;//當前頁碼值
? ???#大于第一頁后優(yōu)化查詢總記錄數(shù)
??//這里我使用了第一次瀏覽分頁時查詢數(shù)據(jù)庫得出數(shù)據(jù)庫總數(shù),點下頁時傳遞并不再查詢數(shù)據(jù)庫,數(shù)據(jù)量多時可能會節(jié)省些(自己想的)
??if($this->page==1&&!isset($_GET['tsize'])){
? ???sql">$result=@mysql_query($this->sql);
? ???$this->totalsize=@mysql_num_rows($result);
? ???@mysql_free_result($result);
??}else{
? ?? ? //上面的問題唯一缺點就是用戶手動在地址欄更改了tsize值后分頁將不再正確
? ???$this->totalsize=(int)$_GET['tsize'];
? ? }
? ???$this->url=(empty($this->url))?$_SERVER['PHP_SELF'].'?tsize='.$this->totalsize:$this->url.'&tsize='.$this->totalsize;//傳遞totalsize給下一頁
??$this->totalpage=ceil($this->totalsize/$this->size);//獲取總頁數(shù)
??$this->page=($this->page>$this->totalpage)?$this->totalpage:$this->page;
??$this->offset=($this->page-1)*$this->size;//獲取偏移值
? ?}
??//查詢數(shù)據(jù)庫返回結果給二維數(shù)組
? ?function fetch_array($result_type=MYSQL_BOTH){
? ???if(!$this->flag){$this->init();$this->flag=true;}
? ???if($this->totalsize
??$this->sql.=" limit $this->offset,$this->size";
??sql,$this->link">$result=@mysql_query($this->sql,$this->link);
??while($row=mysql_fetch_array($result,$result_type)){$rows[]=$row;}
??@mysql_free_result($result);
??return $rows;
? ?}
??//獲取總數(shù)據(jù)數(shù)
? ?function getsize(){
? ???if(!$this->flag){$this-init();$this->flag=true;}//判斷是否已經在此之前初始化過,是則直接返回 (下同)
? ???return $this->totalsize;
? ?}
//獲取總頁數(shù)
? ?function getpage(){
? ???if(!$this->flag){$this-init();$this->flag=true;}
? ???return $this->totalpage;
? ?}
//根據(jù)傳入參數(shù)輸出分頁鏈接
? ?function outpage(){
? ???if(!$this->flag){$this-init();$this->flag=true;}
??switch($this->style){
? ? #1 第x頁 共x頁 首頁 上一頁 下一頁 尾頁 x條/頁 共x頁
? ? case 1:
? ?? ?? ???$pagehtml="第{$this->page}頁 共{$this->totalpage}頁";
? ???$pagehtml.=($this->page==1)?" 首頁 上一頁":" 首頁 上一頁";
? ?? ?? ???$pagehtml.=($this->page==$this->totalpage)?" 下一頁 尾頁":" 下一頁 尾頁";
? ???$pagehtml.=" 共{$this->totalsize}條";
? ?? ?? ???break;
? ? #1 首頁 上一頁 下一頁 尾頁 x條/頁 共x頁
? ? case 2:
? ?? ?? ???$pagehtml="";
? ???$pagehtml.=($this->page==1)?" 首頁 上一頁":" 首頁 上一頁";
? ?? ?? ???$pagehtml.=($this->page==$this->totalpage)?" 下一頁 尾頁":" 下一頁 尾頁";
? ???$pagehtml.=" 共{$this->totalsize}條";
? ?? ?? ???break;
? ? #2 1 2 3 4 5
? ? case 3:
? ?? ?? ???$offset=(ceil($this->page/10)-1)*10;
? ???$pagehtml="";
? ???if($offset!=0){$pagehtml.="| ";}
? ???for($i=1;$i
? ?? ? $n=$i+$offset;
? ?? ? if($n>$this->totalpage){break;}
? ?? ? if($n==$this->page){$pagehtml.=" $n ";}
? ?? ? else{$pagehtml.=" $n ";}
? ???}
? ???if($ntotalpage){$pagehtml.=" >> >>|";}
? ???unset($offset,$i,$n);
? ?? ?? ???break;? ?
? ? #1
? ? default:
? ?? ?? ???$pagehtml="第{$this->page}頁 共{$this->totalpage}頁";
? ???$pagehtml.=($this->page==1)?" 首頁 上一頁":" 首頁 上一頁";
? ?? ?? ???$pagehtml.=($this->page==$this->totalpage)?" 下一頁 尾頁":"??下一頁 尾頁";
? ?? ?? ???break;? ?
??}
? ? return $pagehtml;
? ?}
//錯誤輸出
? ?function halt($msg){
??echo "";
??echo "";
??echo "\r\n";
??echo "
??echo "";
??echo "
??echo $msg;
??echo "
??echo "";
}
}
?>
?
require_once('mysql.class.php');
require_once('page.class.php');
$db=new mysql();
$link=$db->open();
#定義sql和url
$sql='select * from @_info';(@_是我的表定義前綴在傳入類后被替換掉)
$url='';
$mypage=new page($link);
$mypage->size=10;
$mypage->style=3;
$mypage->url=$url;
$mypage->sql=$sql." order by id desc";
$ls=$mypage->fetch_array(MYSQL_ASSOC);//得到返回的結果
if(count($ls)==0){
? ?echo '無結果';
}else{
foreach($ls as $value){
? ? echo $value['title'];
}
//分頁碼
echo $mypage->outpage();
}
?>

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