【php开源代码栏目提醒】:网学会员鉴于大家对php开源代码十分关注,论文会员在此为大家搜集整理了“adodb-pager.inc.php”一文,供大家参考学习
<?php
/*
V4.21 20 Mar 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
Set tabs to 4 for best viewing.
This class provides recordset pagination with
First/Prev/Next/Last links.
Feel free to modify this class for your own use as
it is very basic. To learn how to use it, see the
example in adodb/tests/testpaging.php.
"Pablo Costa" <pablo@cbsp.com.br> implemented Render_PageLinks().
Please note, this class is entirely unsupported,
and no free support requests except for bug reports
will be entertained by the author.
*/
class ADODB_Pager {
var $id; // unique id for pager (defaults to 'adodb')
var $db; // ADODB connection object
var $sql; // sql used
var $rs; // recordset generated
var $curr_page; // current page number before Render() called, calculated in constructor
var $rows; // number of rows per page
var $linksPerPage=10; // number of links per page in navigation bar
var $showPageLinks;
var $gridAttributes = 'width=100% border=1 bgcolor=white';
// Localize text strings here
var $first = '<code>|<</code>';
var $prev = '<code><<</code>';
var $next = '<code>>></code>';
var $last = '<code>>|</code>';
var $moreLinks = '...';
var $startLinks = '...';
var $gridHeader = false;
var $htmlSpecialChars = true;
var $page = 'Page';
var $linkSelectedColor = 'red';
var $cache = 0; #secs to cache with CachePageExecute()
//----------------------------------------------
// constructor
//
// $db adodb connection object
// $sql sql statement
// $id optional id to identify which pager,
// if you have multiple on 1 page.
// $id should be only be [a-z0-9]*
//
function ADODB_Pager(&$db,$sql,$id = 'adodb', $showPageLinks = false)
{
global $HTTP_SERVER_VARS,$PHP_SELF,$HTTP_SESSION_VARS,$HTTP_GET_VARS;
$curr_page = $id.'_curr_page';
if (empty($PHP_SELF)) $PHP_SELF = $HTTP_SERVER_VARS['PHP_SELF'];
$this->
sql = $sql;
$this->id = $id;
$this->db = $db;
$this->showPageLinks = $showPageLinks;
$next_page = $id.'_next_page';
if (isset($HTTP_GET_VARS[$next_page])) {
$HTTP_SESSION_VARS[$curr_page] = $HTTP_GET_VARS[$next_page];
}
if (empty($HTTP_SESSION_VARS[$curr_page])) $HTTP_SESSION_VARS[$curr_page] = 1; ## at first page
$this->curr_page = $HTTP_SESSION_VARS[$curr_page];
}
//---------------------------
// Display link to first page
function Render_First($anchor=true)
{
global $PHP_SELF;
if ($anchor) {
?>
<a href="<?php echo $PHP_SELF,'?',$this->id;?>_next_page=1"><?php echo $this->first;?></a>
<?php
} else {
print "$this->first ";
}
}
//--------------------------
// Display link to next page
function render_next($anchor=true)
{
global $PHP_SELF;
if ($anchor) {
?>
<a href="<?php echo $PHP_SELF,'?',$this->id,'_next_page=',$this->rs->AbsolutePage() + 1 ?>"><?php echo $this->next;?></a>
<?php
} else {
print "$this->next ";
}
}
//------------------
// Link to last page
//
// for better performance with large recordsets, you can set
// $this->db->pageExecuteCountRows = false, which disables
// last page counting.
function render_last($anchor=true)
{
global $
PHP_SELF;
if (!$this->db->pageExecuteCountRows) return;
if ($anchor) {
?>
<a href="<?php echo $PHP_SELF,'?',$this->id,'_next_page=',$this->rs->LastPageNo() ?>"><?php echo $this->last;?></a>
<?php
} else {
print "$this->last ";
}
}
//---------------------------------------------------
// original code by "Pablo Costa" <pablo@cbsp.com.br>
function render_pagelinks()
{
global $PHP_SELF;
$pages = $this->rs->LastPageNo();
$linksperpage = $this->linksPerPage ? $this->linksPerPage : $pages;
for($i=1; $i <= $pages; $i+=$linksperpage)
{
if($this->rs->AbsolutePage() >= $i)
{
$start = $i;
}
}
$numbers = '';
$end = $start+$linksperpage-1;
$link = $this->id . "_next_page";
if($end > $pages) $end = $pages;
if ($this->startLinks && $start > 1) {
$pos = $start - 1;
$numbers .= "<a href=$PHP_SELF?$link=$pos>$this->startLinks</a> ";
}
for($i=$start; $i <= $end; $i++) {
if ($this->rs->AbsolutePage() == $i)
$numbers .= "<font color=$this->linkSelectedColor><b>$i</b></font> ";
else
$numbers .= "<a href=$P