php高效分页类代码(1/2)

这个类适用于配合数据库教程查询分页，和数组分页。下面有使用方法。
[php教程]
/*
* 名称: 分页类
* 介绍: 适用于数组分页和配合sql查询的分页
* 作者: idlion || moonfly (id_lion@hotmail.com)
* 创建时间: 2006-02-18
* 最后修改: 2007-05-24
*/

class pagebreak { private $mtotalrowsnum = 0;   // 总信息行数 private $mcurpagenumber = 1;  // 当前所在页 private $mtotalpagesnum = 1;  // 总页数 private $mquerystring;     // 页面传递的数据(url?后的字符串) private $mpagerowsnum = 20;  // 每页显示行数 private $mindexbarlength = 5;  // 索引条的页数 private $mindexbar = '';     // 页码索引条 private $mpageinfo = '';     // 分页信息 // 页码索引条样式 private $mnextbutton = "8"; private $mprebutton = "7"; private $mfirstbutton = "9"; private $mlastbutton = ":"; private $mcss教程indexbarcurpage = "font-weight:bold;color:#ff0000"; private $mcssindexbarpage = ''; // 分页信息样式 private $mcsspageinfonumfont = 'color:#ff0000'; private $mcsspageinfofont = ''; // 构造方法 public function __construct(&$rsqlquery, $userpagerowsnum='') {   if( !is_array($rsqlquery) ) {    $this->setdbpagebreak($rsqlquery, $userpagerowsnum);   }   else {    $this->setarraypagebreak($rsqlquery, $userpagerowsnum);   } } // 设置数据库型分页 private function setdbpagebreak(&$rsqlquery, $userpagerowsnum='') {   $this->setdbtotalrowsnum($rsqlquery);   $this->settotalpagesnum($userpagerowsnum);   if( $this->mtotalpagesnum > 1 ) {    $this->setcurpagenumber();    $this->setsqlquery($rsqlquery);    $this->setquerystring();    $this->setindexbar();    $this->setpageinfo();   } } // 设置数组型分页 private function setarraypagebreak(&$rarray, $userpagerowsnum='', $usertotalrowsnum='') {   $this->setarraytotalrowsnum($rarray, $usertotalrowsnum);   $this->settotalpagesnum($userpagerowsnum);   if( $this->mtotalpagesnum > 1 ) {    $this->setcurpagenumber();    $this->setarray($rarray);    $this->setquerystring();    $this->setindexbar();    $this->setpageinfo();   } } // 数据库型计算总行数 private function setdbtotalrowsnum($rsqlquery) {   $this->mtotalrowsnum = mysql教程_num_rows( mysql_query($rsqlquery) ); } // 数组型计算总行数 private function setarraytotalrowsnum($array) {   $this->mtotalrowsnum = count($array); } // 计算总页数 private function settotalpagesnum($userpagerowsnum='') {   if( $userpagerowsnum ) {    $this->mpagerowsnum = $userpagerowsnum;   }   $this->mtotalpagesnum = (int)( floor( ($this->mtotalrowsnum-1)/$this->mpagerowsnum )+1 ); } // 计算当前页数 private function setcurpagenumber() {   if( $_get['cur_page'] ) {    $this->mcurpagenumber = $_get['cur_page'];   } } // 修正sql截取语句 private function setsqlquery(&$rsqlquery) {   $start_number = ($this->mcurpagenumber-1)*$this->mpagerowsnum;   $rsqlquery .= " limit ".$start_number.",".$this->mpagerowsnum; } // 修正截取后的array private function setarray(&$rarray) {   $start_number = ($this->mcurpagenumber-1)*$this->mpagerowsnum;   $rarray = array_slice($rarray, $start_number, $this->mpagerowsnum); } // 修正 $_get 传递数据 private function setquerystring() {   $query_string = $_server['query_string'];   if ( $query_string == '' ) {    $this->mquerystring = "?cur_page=";   }   else {    $this->mquerystring = preg_replace("/&?cur_page=d+/", '', $query_string);    $this->mquerystring = "?".$this->mquerystring."&cur_page=";   } } // 设置页码索引条 private function getpageindex() {   if( $this->mtotalpagesnum mindexbarlength ) {    $first_number = 1;    $last_number = $this->mtotalpagesnum;   }   else {    $offset = (int)floor($this->mindexbarlength/2);    if( ($this->mcurpagenumber-$offset) mcurpagenumber+$offset) > $this->mtotalpagesnum ) {     $first_number = $this->mtotalpagesnum-$this->mindexbarlength+1;    }    else {     $first_number = $this->mcurpagenumber-$offset;    }    $last_number = $first_number+$this->mindexbarlength-1;   }   $last_number;   for( $i=$first_number; $imcurpagenumber == $i ) {     $page_index .= "".$i." ";    }    else {     $page_index .= "".$i." ";    }   }   return $page_index; } // 设置页码索引条 private function setindexbar() {   $this->mindexbar = $this->getnavfirstbutton();   $this->mindexbar .= $this->getnavprebutton();   $this->mindexbar .= $this->getpageindex();   $this->mindexbar .= $this->getnavnextbutton();   $this->mindexbar .= $this->getnavlastbutton(); } // 得到页码索引条 首页按钮 private function getnavfirstbutton() {   return "".$this->mfirstbutton." "; } // 得到页码索引条 上一页按钮 private function getnavprebutton() {   if( $this->mcurpagenumber>1 ) {    $pre_number = $this->mcurpagenumber-1;   }   else {    $pre_number = 1;   }   return "".$this->mprebutton." "; } // 得到页码索引条 下一页按钮 private function getnavnextbutton() {   if( $this->mcurpagenumbermtotalpagesnum ) {    $next_number = $this->mcurpagenumber+1;   }   else {    $next_number = $this->mtotalpagesnum;   }   return "".$this->mnextbutton." "; } // 得到页码索引条 末页按钮 private function getnavlastbutton() {   return "".$this->mlastbutton." "; } // 设置分页信息 private function setpageinfo() {   $this->mpageinfo ="";   $this->mpageinfo .= "共 ".$this->mtotalrowsnum." 条信息 | ";   $this->mpageinfo .= "".$this->mpagerowsnum." 条/页 | ";   $this->mpageinfo .= "共 ".$this->mtotalpagesnum." 页 | ";   $this->mpageinfo .= "第 ".$this->mcurpagenumber." 页";   $this->mpageinfo .= ""; } // 取出页码索引条 public function getindexbar() {   return $this->mindexbar; } // 取出分页信息 public function getpageinfo() {   return $this->mpageinfo; } } ?> [/php]