CODE:
<?php
/**
* firepages.com.au - basic pagination class - see
* firepages.com.au/php_pagination.htm for more information
*/
class pager{
var $p_range = 0; # range to show if you dont want to show ALL pages returned
var $curr = 1; # current page number
var $_pages = ''; # no of pages in a recordset
var $_ctl = '_p'; # default control variable name
var $_req_url =''; # url to build links with
var $_req_qs =''; # query string to build links with
# allowed replacements for titles and links
var $_t_tpls = array('{CURRENT}','{FROM}','{TO}','{MAX}','{TOTAL}');
var $_l_tpls = array('{LINK_HREF}','{LINK_LINK}');
function pager($max, $pp, $curr, $extra='')
{
$this->_pp = $pp;
$this->curr = (int)$curr > 0 ? $curr : 1 ;
$this->_pages = $this->p_range = ceil( $max/$pp );
$this->_ctl .= empty($extra['suffix']) ? '' : $extra['suffix'] ;
$this->_req_qs = isset($extra['query_string']) ?
$extra['query_string'] : $_SERVER['QUERY_STRING'] ;
$this->_req_url = isset($extra['php_self']) ?
$extra['php_self'] : $_SERVER['PHP_SELF'] ;
#check for and remove control variables from query string#
if(strpos($this->_req_qs,$this->_ctl)!==false){
parse_str($this->_req_qs,$arr);
$tmp=array();
unset($arr[$this->_ctl]);
foreach($arr as $k=>$v){
$tmp[]="$k=$v";
}
$this->_req_qs = implode('&', $tmp);
unset($tmp);
}
#vars for eye_candy not declared ~#
$this->_from = (($this->curr * $this->_pp) - $this->_pp) + 1;
$to = ($this->_from + $this->_pp) -1 ;
$this->_to = ($to > $max ) ? $max : $to ;
$this->_total = $max ;
}
function set_range($p_range)
{
$this->p_range = $p_range;
}
function get_limit()
{
return ($this->curr * $this->_pp) - $this->_pp. ' , '.$this->_pp;
}
function get_limit_offset()
{
return ($this->curr * $this->_pp) - $this->_pp;
}
function get_title($format)
{
return str_replace($this->_t_tpls,
array($this->curr, $this->_from, $this->_to, $this->_pages, $this->_total), $format);
}
function _get_qurl()
{
$q = empty($this->_req_qs) ? '' : '?'.$this->_req_qs ;
$s = (substr($q, 0, 1) == '?') ? '&' : '?' ;
return $this->_req_url . $q . $s . $this->_ctl . '=';
}
function get_prev($format)
{
return $this->curr > 1 ?
str_replace($this->_l_tpls,array($this->_get_qurl().($this->curr -1)),$format) : '' ;
}
function get_next($format)
{
return ($this->curr < $this->_pages) ?
str_replace($this->_l_tpls,array($this->_get_qurl().($this->curr +1)),$format) : '' ;
}
function get_range($format, $sep,$first='',$last='')
{
if($this->_pages < 2){
return ;
}
$pre_url = $this->_get_qurl();
$lfirst = $llast = '' ;
$min = 1 ;
$to = $this->_pages ;
if($this->_pages > $this->p_range){
$mid = ceil(($this->p_range / 2));
if(($this->curr - $mid) >= 1){
$min = $this->curr - $mid;
}
$to = $min + ($this->p_range-1);
if($this->_pages > $to){
$llast = (!empty($last)) ?
$sep.str_replace($this->_l_tpls,array($pre_url.$this->_pages,$last),$format) : '' ;
}
if($min > 1){
$lfirst = (!empty($first) && $this->curr >1 ) ?
str_replace($this->_l_tpls,array($pre_url.'1',$first),$format) .$sep : '' ;
}
if($to > $this->_pages){
$to = $this->_pages ;
}
}
for($x=$min; $x<=$to; ++$x){
$rets[]=($this->curr!=$x)?str_replace($this->_l_tpls, array($pre_url.$x, $x) , $format):$x;
}
return $lfirst.implode($sep, $rets).$llast;
}
}
?> 调用方法：CODE:
<?
include_once 'pager.class.php';
#get the maximum number of results
$max = mysql_result(
mysql_query("SELECT COUNT(id) FROM colours WHERE id > 0"),
0 ) ;
#construct the pager , here showing 8 results per page
$pager = new pager($max, 8, @$_GET['_p']);
#set the amount of pages to show at any one time
$pager->set_range(6);
#the real query
$sql = "SELECT id,colour_name,hex_value FROM colours WHERE id > 0 LIMIT ".$pager->get_limit() ;
$q = mysql_query($sql) ;
#display stuff
echo $pager->get_title('Hex Colours :: Page {CURRENT} of {MAX}<br />');
echo $pager->get_range('<a href="{LINK_HREF}">{LINK_LINK}</a>','»','First','Last');
echo $pager->get_prev('<a href="{LINK_HREF}" title="Previous">«</a>');
while($r = mysql_fetch_assoc($q)){
echo "<div> #{$r['hex_value']}</div>";
}
echo $pager->get_next('<a href="{LINK_HREF}" class="ex_head" title="Next">»</a>');
echo $pager->get_title('Results {FROM} to {TO} of {TOTAL}<br />');
?>