Class 2 for displaying Oracle database records in pages_PHP tutorial

//-----------------------------
// Work function
//---- ----------------------------

//Read records
//The main working function, according to the The given conditions read the corresponding records from the table
//The return value is a two-dimensional array, Result[record number][field name]

function ReadList() {

$SQL="SELECT * FROM ".$this->Table." ".$this->Condition." ORDER BY ".$this->Id." DESC";

$stmt = OCIParse($this->LinkId,$SQL);
$bool = OCIExecute($stmt);
if (!$bool) {
echo "Connection failed!";
OCILogoff ($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($j=0;$jif(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;
}
//Read the latest record
//topnum specifies the number of records to be read

function ReadTopList($topnum){

$SQL="SELECT * FROM ".$this->Table." ".$this->Condition." ORDER BY ". $this->Id." DESC";

$stmt = OCIParse($this->LinkId,$SQL);
$bool = OCIExecute($stmt);
if ( !$bool) {
echo "Connection failed! ";
OCILogoff($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;


}
//--------------------------
// Pagination related
//----- -----------------------

//Display the current page and total number of pages
//This function is called after GetPage() .
function ThePage() {
echo "Page".$this->CPages."Page/Total".$this->TPages."Page";
}

//Show the page button
//This function should be called after the GetPage() function
//Display the next page and the previous page, and add the parameters to be passed

function Page( ) {
$k=count($this->PageQuery);
$strQuery=""; //Generate a parameter string to pass
for($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.$strQuery." class=newslink>Previous page＜/A>";
else if($this->TheFirstPage!=NULL)
echo "＜A href=".$this->TheFirstPage." class=newslink>Previous page＜/A>";
else echo "Previous page";
}

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> Next page＜/A>";
else
echo "Next page";
}
//------------------ ------------------
// Record grouping
//-------------------- ----------------
//Display grouping
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*$this->PGroup+1$next=( $ne!=-1)?( ($ne-1)*$this->MaxLine):(0);

$k=count($this->PageQuery);
$strQuery=""; //Generate a parameter string to pass
for($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
}
?>