一個odbc連mssql分頁的類

2024-05-04 23:01:01

字體：大中小

供稿：網(wǎng)友

<?
class pages{
 var $cn; //連接數(shù)據(jù)庫游標
 var $d; //連接數(shù)據(jù)表的游標
 var $result; //結(jié)果
 var $dsn; //dsn源
 var $user; //用戶名
 var $pass; //密碼

 var $total; //記錄總數(shù)
 var $pages; //總頁數(shù)
 var $onepage; //每頁條數(shù)
 var $page; //當前頁
 var $fre; //上一頁
 var $net; //下一頁
 var $i; //控制每頁顯示

 function getconnect($dsn,$user,$pass){
 $this->[email protected]_connect($dsn,$user,$pass);
 if(!$this->cn){
 $error="連接數(shù)據(jù)庫出錯";
 $this->getmess($error);
 }
 }

 function getdo($sql){//從表中查詢數(shù)據(jù)
 $this->[email protected]_do($this->cn,$sql);
 if(!$this->d){
 $error="查詢時發(fā)生了小錯誤......";
 $this->getmess($error);
 }
 return $this->d;
 }

 function gettotal($sql){
 $this->sql=$sql;
 $dt=$this->getdo($this->sql); //求總數(shù)的游標
 $this->total=odbc_result($dt,'total');//這里為何不能$this->d呢？
 return $this->total;
 }

 function getlist($sql,$onepage,$page){
 $this->s=$sql;
 $this->onepage=$onepage;
 $this->page=$page;
 $this->dlist=$this->getdo($this->s); //連接表的游標
 $this->pages=ceil($this->total/$this->onepage);
 if($this->pages==0)
 $this->pages++; //不能取到第0頁
 if(!isset($this->page))
 $this->page=1;
 $this->fre = $this->page-1; //將顯示的頁數(shù)
 $this->nxt = $this->page+1;
 $this->nums=($this->page-1)*$this->onepage;
 //if($this->nums!=0){
 // for($this->i=0;$this->i<$pg->getnums();odbc_fetch_row($this->dd),$this->i++);//同上
 //}
 //$this->i=0;//為何這部分不能封裝？
 return $this->dlist;
 }

 function getfanye(){
 $str="";
 if($this->page!=1)
 $str.="<a href=".$php_self."?page=1> 首頁 </a><a href=".$php_self."?page=".$this->fre."> 前頁 </a>";
 else
 $str.="首頁前頁";
 if($this->page<$this->pages)
 $str.="<a href=".$php_self."?page=".$this->nxt."> 后頁 </a>";
 else
 $str.=" 后頁 ";
 if($this->page!=$this->pages)
 $str.="<a href=".$php_self."?page=".$this->pages."> 尾頁 </a>";
 else
 $str.=" 尾頁 ";

 $str.="共".$this->pages."頁";
 $str.="您正瀏覽第".$this->page."頁";
 return $str;
 }

 function getnums(){
 return $this->nums;
 }

 function getonepage(){//每頁實際條數(shù)
 return $this->onepage;
 }

 function geti(){
 return $this->i;
 }

 function getpage(){
 return $this->page;
 }

 function getmess($error){//定制消息
 echo"<center>$error</center>";
 exit;
 }
}

$pg=new pages();
$pg->getconnect("lei","sa","star");
$pg->gettotal("select count(*) as total from xs"); //連學(xué)生表求總數(shù)
$pg->getlist("select xs_name from xs order by xs_id",8,$page);
if($pg->getnums()!=0){
 for($i=0;$i<$pg->getnums();odbc_fetch_row($pg->dlist),$i++);//同上
}
$i=0;
while(odbc_fetch_row($pg->dlist)){
 $name=odbc_result($pg->dlist,"xs_name");
 echo $name." ";
 if($i==$pg->getonepage()){//跳出循環(huán)
 break;
 }
 $i++;
}
echo$pg->getfanye();
?>

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