PHP+mysql分页代码

网络整理 - 08-25

　　适用环境： PHP5.2.x / mysql 5.0.x

　　函数说明：

$page = new page ( $result, 20 ); //$result为返回记录集数组 ,20为返回每页条数
$index = $page->GetIndexBar () . $page->GetPageInfo ();
print_r ( $result );
echo " ";
echo "<center>".$index."</center>";

　　代码：

<?php
/**
分页类
修改:Silence
Creatdate:2006-5-30
LastModify:2009-5-31
*/
class Page {
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 = 11; // 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 $mCssIndexBarCurPage = "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_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 ['page']) {
$this->mCurPageNumber = $_GET ['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 = "?page=";
} else {
$this->mQueryString = preg_replace ( "/&?page=d+/", '', $query_string );
$this->mQueryString = "?" . $this->mQueryString . "&page=";
}
}

// 设置页码索引条
private function GetPageIndex() {
if ($this->mTotalPagesNum <= $this->mIndexBarLength) {
$first_number = 1;
$last_number = $this->mTotalPagesNum;
} else {
$offset = ( int ) floor ( $this->mIndexBarLength / 2 );
if (($this->mCurPageNumber - $offset) <= 1) {
$first_number = 1;
} elseif (($this->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; $i <= $last_number; $i ++) {
if ($this->mCurPageNumber == $i) {
$page_index .= "" . $i . " ";
} else {
$page_index .= " <a href='" . $this->mQueryString . $i . "'>" . $i . "</a> ";
}
}
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 "<a href='" . $this->mQueryString . "1'>" . $this->mFirstButton . "</a> ";
}

// 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 "<a href='" . $this->mQueryString . $pre_number . "'>" . $this->mPreButton . "</a> ";
}

// 得到页码索引条下一页按钮
private function GetNavNextButton() {
if ($this->mCurPageNumber < $this->mTotalPagesNum) {
$next_number = $this->mCurPageNumber + 1;
} else {
$next_number = $this->mTotalPagesNum;
}
return "<a href='" . $this->mQueryString . $next_number . "'>" . $this->mNextButton . "</a> ";
}

// 得到页码索引条末页按钮
private function GetNavLastButton() {
return "<a href='" . $this->mQueryString . $this->mTotalPagesNum . "'>" . $this->mLastButton . "</a> ";
}

// 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;
}

//释放类
function __destruct() {

}
}
?>