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php分页代码收集

http://www.iyit.net 日期：2006-10-6 15:36:21 来源：iyit.net收集点击：

【参加讨论】
php分面代码收集，我将从中取出有特色与众不同的，代码具体给高分。欢迎大家来投稿。
---------------------------------------------------------------

自己写的php分页代码，使用mysql数据库
<?
class pager {
//private
var $count = 0; //integer : number of total records
var $page = 1; //integer : current page
var $pagesize = 10; //integer : number of records to display in one page
var $pagesegsize = 10; //integer : number of pages in one page segment

var $pagecount = 0; //integer : number of total pages
var $scopestart = 0; //integer : the index of first record in current page
var $scopeend = 0; //integer : the index of last record in current page
var $pagescopestart = 0; //integer : start page displayed in current segment if pageseg
var $pagescopeend = 0; //integer : end page displayed in current segment if pageseg

var $linkpattern1 = ''; //string : link pattern in navigator bar: the href
var $linkpattern2 = ''; //string : link pattern in navigator bar: the digit displayed
var $firststring = ''; //string : text displayed on 'first page' button
var $prevnstring = ''; //string : text displayed on 'previous n page' button
var $prevstring = ''; //string : text displayed on 'previous page' button
var $nextstring = ''; //string : text displayed on 'next page' button
var $nextnstring = ''; //string : text displayed on 'next n page' button
var $laststring = ''; //string : text displayed on 'last page' button
var $pageseg = 0; //boolean : if the pages is seperated into segments

/** constructor
* init the class
*/
function pager($count = 0, $page = 1, $pagesize = 10, $pagesegsize = 10) {
$this->count = $count;
$this->page = $page;
$this->pagesize = $pagesize;
$this->pagesegsize = $pagesegsize;
}

/** update the page data
*/
function update() {
//-->check value: count, pagesize
if ($this->count <= 0)
$this->count = 0;
if ($this->pagesize > $this->count)
$this->pagesize = $this->count;
if ($this->pagesize < 1)
$this->pagesize = 1;

$this->pagecount = ceil($this->count / $this->pagesize);
//-->check value: page
if ($this->page > $this->pagecount)
$this->page = $this->pagecount;
if ($this->page < 1)
$this->page = 1; //<--
//-->check value: pagesegsize
if ($this->pagesegsize > $this->pagecount)
$this->pagesegsize = $this->pagecount;
if ($this->pagesegsize < 1)
$this->pagesegsize = 1; //<--

$this->scopestart = ($this->page - 1) * $this->pagesize;
$this->scopeend = $this->scopestart + $this->pagesize - 1;
if ($this->scopeend >= $this->count)
$this->scopeend = $this->count;

$this->pagescopestart = 1;
$this->pagescopeend = $this->pagecount;

if ($this->prevnstring != '' &brvbar &brvbar $this->nextnstring != ''){ //use page segment
$this->pageseg = 1;
$this->pagescopestart = (ceil($this->page / $this->pagesegsize) - 1) * $this->pagesegsize + 1;
$this->pagescopeend = $this->pagescopestart + $this->pagesegsize - 1;
if ($this->pagescopeend > $this->pagecount)
$this->pagescopeend = $this->pagecount;
}
}

---------------------------------------------------------------

if ($this->firststring != '') { //set first button (if firststring exists)
if ($this->page == 1 &brvbar &brvbar $this->pagecount < 1) {
$this->navbar = "{$this->firststring} {$this->navbar}";
} else {
$href = sprintf($this->linkpattern1, 1);
$this->navbar = "<a href='$href'>{$this->firststring}</a> {$this->navbar}";
}
}
if ($this->laststring != '') { //set last button (if laststring exists)
if ($this->page >= $this->pagecount) {
$this->navbar = "{$this->navbar}{$this->laststring} ";
} else {
$href = sprintf($this->linkpattern1, $this->pagecount);
$this->navbar = "{$this->navbar}<a href='$href'>{$this->laststring}</a> ";
}
}
return $this->navbar;
}

function setlinkpatterns($linkpattern1, $linkpattern2) {
$this->linkpattern1 = $linkpattern1;
$this->linkpattern2 = $linkpattern2;
}

function setnavstring($firststring, $prevnstring, $prevstring, $nextstring, $nextnstring, $laststring) {
$this->firststring = $firststring;
$this->prevnstring = $prevnstring;
$this->prevstring = $prevstring;
$this->nextstring = $nextstring;
$this->nextnstring = $nextnstring;
$this->laststring = $laststring;
}

function setpagesegsize($pagesegsize) {
$this->pagesegsize = $pagesegsize;
}

function setpagesize($pagesize) {
$this->pagesize = $pagesize;
}

function setpage($page) {
$this->page = $page;
}

function setcount($count) {
$this->count = $count;
}
}

class dbpager extends pager {
var $con = 0; //integer : connection id
var $sql = ''; //string : sql clause
var $list = array(); //array : returned result of db query

function dbpager($con = 0, $sql = '', $page = 1) {
$this->con = $con;
$this->sql = $sql;
$this->page = $page;
}

function setcount($count) {
}

function update() {
$pattern = "select(.*)from";
$replace = "select count(*) from";
$sqlcount = eregi_replace($pattern, $replace, $this->sql);
$result = mysql_query($sqlcount, $this->con);
$row = mysql_fetch_row($result);
$this->count = $row[0];
parent::update();
$this->sql .= sprintf(" limit %d, %d", $this->scopestart, $this->pagesize);
$result = mysql_query($this->sql, $this->con);
$i = 0;
while ($row = mysql_fetch_row($result)) {
$this->list[$i] = $row;
$i++;
}
}

function getlist() {
return $this->list;
}
}

---------------------------------------------------------------

function getcount() {
return $this->count;
}

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

function getpagesize() {
return $this->pagesize;
}

function getpagesegsize() {
return $this->pagesegsize;
}

function getpagecount() {
return $this->pagecount;
}

function getscopestart() {
return $this->scopestart;
}

function getscopeend() {
return $this->scopeend;
}

function getpagescopestart() {
return $this->pagescopestart;
}

function getpagescopeend() {
return $this->pagescopeend;
}

function getnavbar() {
if ($this->linkpattern1 == '' &brvbar &brvbar $this->linkpattern2 == '') //no navigator bar
return '';
if ($this->navbar == '') { //start calculating basic navigator bar
$s = '';
for ($i = $this->pagescopestart; $i <= $this->pagescopeend; $i++) {
$t = sprintf($this->linkpattern2, $i);
if ($this->page == $i) {

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