分页显示Oracle数据库记录的类 //-------------------------------- // 工作函数 //-------------------------------- //读取记录 // 主要工作函数,根据所给的条件从表中读取相应的记录 // 返回值是一个二维数组,Result[记录号][字段名] function ReadList() { $SQL="SELECT * FROM ".$this->Table." ".$this->Condition." ORDER BY ".$this->Id." DESC"; $stmt = OCIParse($this->LinkId,$SQL); $bool = OCIExecute($stmt); if (!$bool) { echo "连接失败!"; OCILogoff($this->LinkId); exit; } else { $ncols = OCINumCols($stmt); for ( $i = 1; $i <= $ncols; $i++ ) $column_name[$i] = OCIColumnName($stmt,$i); $k=0; for($j=0;$j<$this->StartRec+$this->Offset;$j++) OCIFetch($stmt); for($j=0;$j<$this->MaxLine;$j++){ if(OCIFetch($stmt)){ $k++; for($i=1;$i<=$ncols;$i++) $temp[$column_name[$i]]=OCIResult($stmt,$i); $this->Result[]=$temp; } else break; } $this->Number=$k; } OCIFreeStatement($stmt); return $this->Result; } //读最新的记录 //topnum指定要读出的记录数 function ReadTopList($topnum){ $SQL="SELECT * FROM ".$this->Table." ".$this->Condition." ORDER BY ".$this->Id." DESC"; $stmt = OCIParse($this->LinkId,$SQL); $bool = OCIExecute($stmt); if (!$bool) { echo "连接失败!"; OCILogoff($this->LinkId); exit; } else { $ncols = OCINumCols($stmt); for ( $i = 1; $i <= $ncols; $i++ ) $column_name[$i] = OCIColumnName($stmt,$i); $k=0; for($j=0;$j<$topnum;$j++){ if(OCIFetch($stmt)){ $k++; for($i=1;$i<=$ncols;$i++) $temp[$column_name[$i]]=OCIResult($stmt,$i); $this->TopResult[]=$temp; } else break; } $this->TopNumber=$k; } OCIFreeStatement($stmt); return $this->TopResult; } //--------------------------- // 分页相关 //--------------------------- //显示当前页及总页数 //本函数在GetPage()后调用。 function ThePage() { echo "第".$this->CPages."页/共".$this->TPages."页"; } //显示翻页按钮 //此函数要在GetPage()函数之后调用 //显示下页、上页,并加上要传递的参数 function Page() { $k=count($this->PageQuery); $strQuery=""; //生成一个要传递参数字串 for($i=0;$i<$k;$i++){ $strQuery.="&".$this->PageQuery[$i][key]."=".$this->PageQuery[$i][value]; } return $strQuery; } function PrePage($strQuery){ $prev=$this->Offset-$this->MaxLine; if($prev>=0) echo "<A href=$PHP_SELF?offset=".$prev.$strQuery." class=newslink>上一页</A>"; else if($this->TheFirstPage!=NULL) echo "<A href=".$this->TheFirstPage." class=newslink>上一页</A>"; else echo "上一页"; } function NexPage($strQuery){ $next=$this->Offset+$this->MaxLine; $k=$this->Total-$this->StartRec; if($next<$k) echo "<A href=$PHP_SELF?offset=".$next.$strQuery." class=newslink>下一页</A>"; else echo "下一页"; } //------------------------------------ // 记录分组 //---------------------------------- //显示分组 function NumPage() { $first=($this->CGroup-1)*($this->PGroup)+1; $last=($first+$this->PGroup > $this->TPages)? ($this->TPages+1):($first+$this->PGroup); $pr=($this->CGroup-2>=0)?( ($this->CGroup-2)*($this->PGroup)+1 ):(-1); $prev=($pr!=-1)?( ($pr-1)*$this->MaxLine):(0); $ne=($this->CGroup*$this->PGroup+1<=$this->TPages)?($this->CGroup*$this->PGroup+1):(-1); $next=($ne!=-1)?( ($ne-1)*$this->MaxLine):(0); $k=count($this->PageQuery); $strQuery=""; //生成一个要传递参数字串 for($i=0;$i<$k;$i++){ $strQuery.="&".$this->PageQuery[$i][key]."=".$this->PageQuery[$i][value]; } if($first!=1) echo "<A href=$PHP_SELF?offset=".$prev.$strQuery." > << </a>"; for($i=$first;$i<$last;$i++) { if($this->CPages!=$i){ $current=($i-1)*$this->MaxLine; echo "<A href=$PHP_SELF?offset=".$current.$strQuery." >".$i."</a> "; } else echo "<font color=#e00729>".$i."</font> "; } if($ne!=-1) echo "<A href=$PHP_SELF?offset=".$next.$strQuery." > >> </a>"; } //******end class } ?> |