这是一个简单易用的分页类。只需在你原有的程序中加两句、改一句就可以了
先贴代码
paging.php
<?php
class Paging {
public static $count = 0;
public static $size = 0;
public static $page = 0;
static function prepare($sql, $pagesize=10) {
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$pageon = ($page - 1) * $pagesize;
$sql = preg_replace('/select\s/i', '$0SQL_CALC_FOUND_ROWS ', $sql) . " limit $pageon, $pagesize";
$rs = mysql_query($sql);
$p = mysql_query('SELECT FOUND_ROWS()');
list(self::$count) = mysql_fetch_row($p);
self::$size = $pagesize;
self::$page = $page;
return $rs;
}
static function bar($tpl='') {
if(!$tpl) $tpl = '<a href=?reset>首页</a> <a href=?prve>上一页</a> <a href=?next>下一页</a> <a href=?end>尾页</a>';
$count = ceil(self::$count / self::$size);
$page = self::$page;
unset($_GET['page']);
$d = array(
'reset' => 1,
'prve' => $page > 1 ? $page - 1 : 1,
'next' => $page < $count ? $page + 1 : $count,
'end' => $count,
);
foreach($d as $k=>$v) {
$_GET['page'] = $v;
$tpl = str_replace($k, http_build_query($_GET), $tpl);
}
echo $tpl;
}
}通常你都有类似这样的语句
$sql =".....";
$rs = mysql_query($sql);
或
$rs = mysql_query("select ....");
你只需改作
include 'paging.php';
$rs = paging::prepare($sql, 每页行数);
在需要出现分页条的地方写入
paging::bar();就可以了，非常简单！
先贴代码
paging.php
<?php
class Paging {
public static $count = 0;
public static $size = 0;
public static $page = 0;
static function prepare($sql, $pagesize=10) {
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$pageon = ($page - 1) * $pagesize;
$sql = preg_replace('/select\s/i', '$0SQL_CALC_FOUND_ROWS ', $sql) . " limit $pageon, $pagesize";
$rs = mysql_query($sql);
$p = mysql_query('SELECT FOUND_ROWS()');
list(self::$count) = mysql_fetch_row($p);
self::$size = $pagesize;
self::$page = $page;
return $rs;
}
static function bar($tpl='') {
if(!$tpl) $tpl = '<a href=?reset>首页</a> <a href=?prve>上一页</a> <a href=?next>下一页</a> <a href=?end>尾页</a>';
$count = ceil(self::$count / self::$size);
$page = self::$page;
unset($_GET['page']);
$d = array(
'reset' => 1,
'prve' => $page > 1 ? $page - 1 : 1,
'next' => $page < $count ? $page + 1 : $count,
'end' => $count,
);
foreach($d as $k=>$v) {
$_GET['page'] = $v;
$tpl = str_replace($k, http_build_query($_GET), $tpl);
}
echo $tpl;
}
}通常你都有类似这样的语句
$sql =".....";
$rs = mysql_query($sql);
或
$rs = mysql_query("select ....");
你只需改作
include 'paging.php';
$rs = paging::prepare($sql, 每页行数);
在需要出现分页条的地方写入
paging::bar();就可以了，非常简单！
这样的写法还是第一次见到。
$sql = preg_replace('/select\s/i', '$0SQL_CALC_FOUND_ROWS ', $sql) . " limit $pageon, $pagesize";sql还用preg_replace……
<!doctype html>
<html>
<meta charset=utf-8>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<style>
.page a{
text-decoration:none;
}
.page a span{
padding:6px 17px 6px 17px;
border:1px solid #ABC;
color: #1155BB;
font-size:14px;
font-weight:bold;
font-family: 'helvetica neue', arial, sans-serif;
}
#Next{margin-left:5px;}
.click_page{
background:#2266BB;
color:#ffffff;
}
.page a span:hover{
background:#3377CC;
color:#ffffff;
}
</style>
<body>
<ul id="myPage">
<li>aaaaaaaa1</li>
<li>aaaaaaaa2</li>
<li>aaaaaaaa3</li>
<li>aaaaaaaa4</li>
<li>aaaaaaaa5</li>
<li>aaaaaaaa6</li>
<li>aaaaaaaa7</li>
<li>aaaaaaaa8</li>
<li>aaaaaaaa9</li>
<li>aaaaaaaa10</li>
</ul>
<div id="myDev"></div>
<script>
function Paginate(pageDIV,parent,child,size){
var $pageDest = $(pageDIV);
var $mainTag = $(parent);
var mainContent = $mainTag.html();
var currentPage = 0; //当前页
var pageSize = size; //每页行数
var numRows = $mainTag.find(child).length;
var numPages = Math.ceil(numRows/pageSize); //总页数
$mainTag.bind("repaginate", function() {
$mainTag.find(child).hide();
$mainTag.find(child).slice((currentPage*pageSize),(currentPage+1)*pageSize).show();
});
var $pager = $("<div class='page'><a href='javascript:void(0)'><span id='Prev' style='margin-right:4px;'>« Prev</span></a></div>");
for( var page = 0; page < numPages; page++ )
{
$("<a href='javascript:void(0)'><span id='"+(page+1)+"'>"+ (page+1) +"</span></a>")
.bind("click", { "newPage": page }, function(event){
currentPage = event.data["newPage"];
$("#Prev").css({"background":"#FFF"});
$("#Next").css({"background":"#FFF"});
if(currentPage == 0 ){
$("#Prev").css({"background":"#c0c0c0"});
}else if(currentPage == (numPages-1)){
$("#Next").css({"background":"#c0c0c0"});
}
$(this).children("span").attr("class","click_page").css({"color":"#FFFFFF"});
$(".page a span").not($(this).children("span")).attr("class","");
$(".page a span").not($(this).children("span")).css({"color":"#1155BB"});
$mainTag.trigger("repaginate");
})
.appendTo($pager);
}
var next=$("<a href='javascript:void(0)'><span id='Next'>Next »</span></a>");
$pager.append(next);
$pager.appendTo($pageDest);//显示分页条
$("#1").attr("class","click_page");
$("#1").css({"color":"#FFFFFF"});
$mainTag.trigger("repaginate");//初始化触发一次
$("#Prev").bind("click",function(){
var prev=Number($(".click_page").text()-2);
currentPage=prev;
if(currentPage==0){
$(this).css({"background":"#c0c0c0"});
}else if(currentPage<0) {
return;
}
$("#Next").css({"background":"#FFF"});
$("#"+(prev+1)).attr("class","click_page");
$("#"+(prev+1)).css({"color":"#FFFFFF"});
$(".page a span").not($("#"+(prev+1))).attr("class","");
$(".page a span").not($("#"+(prev+1))).css({"color":"#1155BB"});
$mainTag.trigger("repaginate");
});
$("#Next").bind("click",function(){
var next=$(".click_page").attr("id");
currentPage=Number(next);
if((currentPage+1)>numPages) {
return;
}else if((currentPage+1)==numPages) {
$(this).css({"background":"#c0c0c0"});
}
$("#Prev").css({"background":"#FFF"});
$("#"+(currentPage+1)).attr("class","click_page");
$("#"+(currentPage+1)).css({"color":"#FFFFFF"});
$(".page a span").not($("#"+(currentPage+1))).attr("class","");
$(".page a span").not($("#"+(currentPage+1))).css({"color":"#1155BB"});
$mainTag.trigger("repaginate");
});
}
Paginate("#myDev","#myPage","li",3);
</script>
</body>
</html>娱乐娱乐
现在才发现还有这种写法..学习了
$rs = mysql_paging_query($sql, 20);//替代 mysql_query
mysql_paging_bar();//显示分页条
paging.phpclass Paging {
private static $_Instance;
private function __clone(){}
public static function getInstance() {
if(empty(self::$_Instance)) self::$_Instance = new self();
return self::$_Instance;
} protected $count = 0;
protected $size = 0;
protected $page = 0;
function prepare($sql, $pagesize=10) {
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$pageon = ($page - 1) * $pagesize;
$sql = preg_replace('/select\s/i', '$0SQL_CALC_FOUND_ROWS ', $sql) . " limit $pageon, $pagesize";
$rs = mysql_query($sql);
$p = mysql_query('SELECT FOUND_ROWS()');
list($this->count) = mysql_fetch_row($p);
$this->size = $pagesize;
$this->page = $page;
return $rs;
}
function bar($tpl='') {
if(!$tpl) $tpl = '共{count}页 第{page}页 <a href=?{reset}>首页</a> <a href=?{prve}>上一页</a> <a href=?{next}>下一页</a> <a href=?{end}>尾页</a>';
$count = ceil($this->count / $this->size);
$page = $this->page;
$d = array(
'{reset}' => 1,
'{prve}' => $page > 1 ? $page - 1 : 1,
'{next}' => $page < $count ? $page + 1 : $count,
'{end}' => $count,
'{count}' => $count,
'{page}' => $page,
);
foreach($d as $k=>&$v) {
if(in_array($k, array('{reset}', '{prve}', '{next}', '{end}'))) {
$_GET['page'] = $v;
$v = http_build_query($_GET);
}
}
echo strtr($tpl, $d);
}
}
function mysql_paging_query($sql, $num=10) {
return Paging::getInstance()->prepare($sql, $num);
}
function mysql_paging_bar($tpl='') {
return Paging::getInstance()->bar($tpl);
}
<form method="post" action="#">
按标题: <input type="text" name="QueryLike[testTitle]" />
id大于: <input type="text" name="QueryMoreThan[testId]" />
<input type="submit" value="搜索"/>
</form>对原有的paging 类，做极小的改变.
//这里的代码，要和唠叨老大保持高度一致.
header('Content-type:text/html; charset=utf-8');
include 'parse.php';
include 'convert.php';
include 'pageparam.php';
include 'page.php';$sql = "select testId,testTitle from test ";
$rs = mysql_paging_query($sql, 5);//替代 mysql_query
//调试，看查询结果！
while($rows = mysql_fetch_object($rs)){
print("<pre>");
print_r($rows);
print("</pre>");
}
echo mysql_paging_bar();//显示分页条
下面开始，就是折腾的地方了。class Paging {
private static $_Instance;
private function __clone(){}
public static function getInstance() {
if(empty(self::$_Instance)) self::$_Instance = new self();
return self::$_Instance;
}
protected $count = 0;
protected $size = 0;
protected $page = 0; //extend by murain. 参数解析对象.
protected $paramParse; function prepare($sql, $pagesize=10) {
$page = isset($_GET['page']) ? $_GET['page'] : 1;
$pageon = ($page - 1) * $pagesize; //extend by murain. 改变一 得到sql语句..
$this->paramParse = new pageparam();
$sql = $this->paramParse->getSql($sql); $sql = preg_replace('/select\s/i', '$0SQL_CALC_FOUND_ROWS ', $sql) . " limit $pageon, $pagesize";
$rs = mysql_query($sql);
$p = mysql_query('SELECT FOUND_ROWS()');
list($this->count) = mysql_fetch_row($p);
$this->size = $pagesize;
$this->page = $page;
return $rs;
}
function bar($tpl='') {
if(!$tpl) $tpl = '共{count}页 第{page}页 <a href=?{reset}>首页</a> <a href=?{prve}>上一页</a> <a href=?{next}>下一页</a> <a href=?{end}>尾页</a>';
$count = ceil($this->count / $this->size);
$page = $this->page;
$d = array(
'{reset}' => 1,
'{prve}' => $page > 1 ? $page - 1 : 1,
'{next}' => $page < $count ? $page + 1 : $count,
'{end}' => $count,
'{count}' => $count,
'{page}' => $page,
);
foreach($d as $k=>&$v) {
if(in_array($k, array('{reset}', '{prve}', '{next}', '{end}'))) {
//改变二,分类的超链接.
$v = $this->paramParse->makePageItem($v);
}
}
return strtr($tpl, $d);
}
}如果，就很easy 的支持了表单的查询. 这里仅做了两个基本的例子，一个like 查询，一个是 >= 查询.
这样当你有查询需要的变化时，只用把查询表单的命名更改一下即可.下面就是扩展类了，有兴趣的慢慢看。欢迎指导拍砖。
pageparam.php<?php
class pageparam{
protected $parser;
protected $serchparam;
protected $convert; public function __construct()
{
//参数解析.
if( strtolower($_SERVER['REQUEST_METHOD']) == 'post'){
$this->parser = new postParse();
}else {
$this->parser = new getParse();
} $this->serchparam = $this->parser->parse(); //得到查询参数.
$this->qConvert = new queryConvert( $this->serchparam ); } /**
* 处理sql 查询条件
* @param $sql
*/
public function getSql( $sql )
{ list( $where , $order ) = $this->qConvert->convert(); $whereString = "";
if( !preg_match( "/where/i" , $sql))
{
$whereString = " where 1=1";
} foreach($where as $whereItem):
$whereString .= " and $whereItem";
endforeach;
$sql .= $whereString;;
return $sql;
} public function makePageItem($v)
{ $v = "page=$v";
unset( $this->serchparam["page"] ); foreach ( $this->serchparam as $key =>$val):
$v .= "&$key=$val";
endforeach; return $v;
} public static function encode( $str){
$src = array("/","+","="); $dist = array("-a","-b","-c"); $old = base64_encode($str); $new = str_replace($src,$dist,$old);
return $new;
}
public static function decode( $str) {
$src = array("-a","-b","-c"); $dist = array("/","+","="); $old = str_replace($src,$dist,$str); $new = base64_decode($old);
return $new;
}
}parse.php<?php
/*获取参询参数的接口*/
interface iParse{ function parse();}class getParse implements iParse{
private $_params;
function parse(){
$this->setParam( $_GET );
return $this->getParam();
}
//设置与获取参数
function setParam( $_param ) { $this->_params = $_param; }
function getParam() { return $this->_params; }
}class postParse implements iParse{
private $_params = array();
private $_postParam;
private $_ParseItem; //解析序列
const PARSE_ARRAY_INTERVAL_WORD = "-_-";public function parse(){
$params = $_POST;
$this->setParams($params);
return $this->getParams();
}function __construct(){
$itemArr = array(
"QueryLike" => "CommonParse"
, "QueryMoreThan" => "CommonParse"
, "QueryIn" => "ArrayParse"
);
$this->setParseItem($itemArr);
}private function setParseItem($itemArr) { $this->_ParseItem = $itemArr; }private function setParams( $params = array() ) {
$this->_postParam = $params;
foreach( $this->_ParseItem as $key=>$handle):
$this->$handle( $key );
endforeach;
}private function getParams() {
return $this->_params;
}private function CommonParse($key) { //单值参数解析.
$$key = isset( $this->_postParam[$key])? $this->_postParam[$key]:""; //终于用了一次$$
if(is_array($$key)):
//遍历所有的参数,为空的不参与搜索,后期交由handle去处理.
foreach ($$key as $key2 => $value):
if (trim($value) == "") unset($$key[$key2]); //删除搜索条件中值为空的参数
else {
$value = pageparam::encode($value);
$this->_params += array($key."_".$key2=>"$value");
}
endforeach;
endif;
}private function ArrayParse($name) { //数组参数解析 通常为checkbox.
foreach($this->_postParam as $key => $val):
if(preg_match("/$name/i",$key))
{
$str_val = array(); //生成parm所用参数数组.
$str_cond = array(); //生成查询条件数组.$key_piece = str_replace("$name"."_","",$key); //找出mul 部分.
if(sizeof($_POST["$key"]) >0):
foreach($_POST["$key"] as $val) {
$str_val[]= pageparam::encode($val); //生成parm所用参数数组.
$str_cond []= "$key_piece = '$val' "; //生成查询条件数组.
}
$str_mul = implode( self::PARSE_ARRAY_INTERVAL_WORD ,$str_val); $this->_params[$key] = $str_mul; //合并生成parameters.
endif;
}
endforeach;
}
}
convert.phpabstract class converAbstract
{ private $_params;
private $_iConvertHandle;
public $queryCond = array(); function __construct($param)
{
$this->setParams($param);
}
/**
* 设置待转换参数。
* @param $params
*/
public function setParams($params) { $this->_params = $params; }
public function getParams() { return $this->_params; }
abstract function convert(); public function getKeyValue($key)
{
//pr($key,"正在解析字段名");
preg_match_all("/(Query[^_]+)_([\w-]+)/i",$key,$match);
if(!$match[0]){
$match[1][0] = $key;
$match[2][0] = "";
}
// pr($match,"解析后的值");
return array($match[1][0],$match[2][0]);
} /**
* 设置转换器接口
* @param $handle
*/
public function setConvertHandle($handle)
{
$handleClsString = $handle;
$this->_iConvertHandle = new $handleClsString();
}
/**
* 得到转换器接口
* @return mixe
*/
public function getConvertHandle()
{
return $this->_iConvertHandle;
}
}
class queryConvert extends converAbstract{
function __construct($param)
{
parent::__construct( $param);
} /**
* 实现 convert 接口.
*/
function convert()
{
$params = $this->getParams();
foreach ($params as $key => $val):
//得到查询条件.
list($queryHandle, $queryKey) = $this->getKeyValue($key);
if (preg_match("/Query/i", $queryHandle)):
$this->setConvertHandle($queryHandle . "ConvertHandle"); //设置查询条件接口转换器.
//KDG::pr( $queryKey , "得到的对应的数.");
if ($queryKey):
$temp = $this->getConvertHandle()->convert2Query($queryKey, $val);
if (is_array($temp)):
$this->mergeData($temp);
endif;
endif;
endif;
endforeach;
return array($this->queryCond,$this->order);
} /**
*
* 归并查询数组
* @param unknown_type $arr
*/
function mergeData($arr)
{
foreach ($arr as $key => $val):
if (!array_key_exists($key, $this->queryCond)) {
$this->queryCond += $arr;
}
else {
if (is_int($key)) { //Patch for the merget the QueryCondArr conflict!
$this->queryCond [] = $val;
continue;
}
$this->queryCond [$key] = array_merge($this->queryCond [$key], $val);
}
endforeach;
}
}interface iConvertHandle{
function convert2Query($key,$val); //转换至查询条件
}//like 查询转换
class QueryLikeConvertHandle implements iConvertHandle {
function convert2Query($key,$val) //转换至查询条件
{
$queryCond = array();
$queryCond []= "$key like '%" . pageparam::decode($val) . "%'";
return $queryCond;
}
}//大于等于查询条件转换
class QueryMoreThanConvertHandle implements iConvertHandle {
function convert2Query($key,$val) //转换至查询条件
{
$queryCond = array();
$queryCond []= "$key >= '".trim(pageparam::decode($val) ) ."'";
return $queryCond;
}
}
mssql是2012才有fetch ...，之前一直仅仅是一半功能的top n或大动干戈的row_number()
分页类传个总数跟当前页码与页码的url或分析生成页码列表就好了。另，
$sql = preg_replace('/select\s/i', '$0SQL_CALC_FOUND_ROWS ', $sql) . " limit $pageon, $pagesize";
sql有两个select应该有问题了吧? 加个1参数...
分页就分页。获取数据就获取数据www.dcrcms.com我写的小CMS里有分页类的。include/class/class.page.php 也可以看看
2 非常不利代码重构。我很难想像一个项目中把sql弄的那都是，迅速解决线上BUG，快速完成产品需求，良好的代码结构是少不了的，通常网站多多少少会使用mvc，也就是说通常会封装mysql类，还会有一个model类，最后开发会以model为基类写出我们的业务逻辑类。 如果你把sql写入分页类。你可能就会舍弃这些，如果你两个都用，我很怀疑你技术经理怎么做的代码架构，也许吧！公司很民主，但绝对是很糟的事。也许有一天你的数据库要做调整，为什么？没事闲的？因为数据量太大了。要做分表处理，拿csdn来说，我发布的贴子做了按年份处理（也许还按论坛做了分库处理，个人的猜想）。分页通常不会在一处调用，这个取决产品需求。也就说你要改的地方不止一处。而且我现在还要做分库处理，要使用主从。也就是说要区分mysql的连接，因此大家使用mysql_query时，把第二个参数也带上，再使用MVC时，可以很好解决这个问题。
不太会用，不知道怎么用分页，麻烦楼主帮我弄下可以么？很简单的
我的代码 aa.php<?php
$con = mysql_connect("localhost","root","123456");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}mysql_select_db("qq", $con);$result = mysql_query("SELECT * FROM abc");echo "<table border='1'>
<tr>
<th>qq</th>
<th>jiage</th>
<th>lirun</th>
<th>shijian</th>
</tr>";while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['qq'] . "</td>";
echo "<td>" . $row['jiage'] . "</td>";
echo "<td>" . $row['lirun'] . "</td>";
echo "<td>" . $row['shijian'] . "</td>";
echo "</tr>";
}
echo "</table>";mysql_close($con);
?>这段代码是是将数据库里面的数据取出来，然后以表格形式输出来，可是如果数据库的数据过多，表格就会越来越长。。所以我想弄个分页，只显示5条信息，如果想看第六条就要 下一页
能帮我弄下么？！
版主，上面这话代码是做什么的？
select SQL_CALC_FOUND_ROWS * from ..... limit 1,10
这样的指令串， limit 子句就不需要解释了吧？
SQL_CALC_FOUND_ROWS 参数可计算出全部符合条件的记录数，随后可用 SELECT FOUND_ROWS() 取回
不然你为取得全部符合条件的记录数，不也是要 select count() ...一下吗？
#33 的担忧是无意义的
SELECT FOUND_ROWS() 必然比 select count() .... 快，因为他不再需要遍历数据了
这行代码里面的$0SQL_CALC_FOUND_ROWS 是不是写错了，应该是SQL_CALC_FOUND_ROWS吧？
我用了你的例子， 但是显示错误，Fatal error: Call to undefined function mysql_paging_query() in D:\PHPnow-1.5.6\htdocs\test\test.php on line 12
mysql_paging_query（）？怎么找不到呢？ 需要什么设置？