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▪分享:一例PHP翻页(分页)类的实例代码 本节主要内容:
php分页类
完整代码:
代码示例:
<?php
/**
* filename: ext_page.class.php
* @package:phpbean
* descrīption:超强分页类,四种分页模式,默认采用类似baidu,google的分页风格。.........
▪PHP中使用Insert、Update语句的构造类 很简单的一段代码,学习下使用Insert和Update语句实现构造类的方法。
1,调用方法
代码示例:
<?php
$mysql = new sqlstr("table1");
$mysql->set("name","value");
$mysql->set("name","1",true);
echo $mysql-&.........
▪php批量更改数据库表前缀的方法 本节内容:
批量替换或添加数据库表前缀
例子,批量更改数据库、表的前缀
代码示例:
<?php
$database = "databaseName"; //数据库名称
$user = "root"; //数据库用户名
$pwd = "pwd"; //.........
[1]分享:一例PHP翻页(分页)类的实例代码
来源: 互联网 发布时间: 2013-12-24
本节主要内容:
php分页类
完整代码:
代码示例:
<?php
/**
* filename: ext_page.class.php
* @package:phpbean
* descrīption:超强分页类,四种分页模式,默认采用类似baidu,google的分页风格。
* 2.0增加功能:支持自定义风格,自定义样式,同时支持PHP4和PHP5,
* example:
* 模式四种分页模式:
require_once('../libs/classes/page.class.php');
$page=new page(array('total'=>1000,'perpage'=>20));
echo 'mode:1<br>'.$page->show();
echo '<hr>mode:2<br>'.$page->show(2);
echo '<hr>mode:3<br>'.$page->show(3);
echo '<hr>mode:4<br>'.$page->show(4);
开启AJAX:
$ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
echo 'mode:1<br>'.$ajaxpage->show();
采用继承自定义分页显示模式。
编辑整理: http://www.
*/
class _page
{
/**
* config ,public
*/
var $page_name="PB_page";//page标签,用来控制url页。比如说xxx.php?PB_page=2中的PB_page
var $next_page='>';//下一页
var $pre_page='<';//上一页
var $first_page='First';//首页
var $last_page='Last';//尾页
var $pre_bar='<<';//上一分页条
var $next_bar='>>';//下一分页条
var $format_left='[';
var $format_right=']';
var $is_ajax=false;//是否支持AJAX分页模式
/**
* private
*
*/
var $pagebarnum=10;//控制记录条的个数。
var $totalpage=0;//总页数
var $ajax_action_name='';//AJAX动作名
var $nowindex=1;//当前页
var $url="";//url地址头
var $offset=0;
/**
* constructor构造函数
*
* @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...
*/
function page($array)
{
if(is_array($array)){
if(!array_key_exists('total',$array))$this->error(__FUNCTION__,'need a param of total');
$total=intval($array['total']);
$perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
$nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
$url=(array_key_exists('url',$array))?$array['url']:'';
}else{
$total=$array;
$perpage=10;
$nowindex='';
$url='';
}
if((!is_int($total))||($total<0))$this->error(__FUNCTION__,$total.' is not a positive integer!');
if((!is_int($perpage))||($perpage<=0))$this->error(__FUNCTION__,$perpage.' is not a positive integer!');
if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//设置pagename
$this->_set_nowindex($nowindex);//设置当前页
$this->_set_url(/blog_article/$url/index.html);//设置链接地址
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$perpage;
if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打开AJAX模式
}
/**
* 设定类中指定变量名的值,如果改变量不属于这个类,将throw一个exception
*
* @param string $var
* @param string $value
*/
function set($var,$value)
{
if(in_array($var,get_object_vars($this)))
$this->$var=$value;
else {
$this->error(__FUNCTION__,$var." does not belong to PB_Page!");
}
}
/**
* 打开倒AJAX模式
*
* @param string $action 默认ajax触发的动作。
*/
function open_ajax($action)
{
$this->is_ajax=true;
$this->ajax_action_name=$action;
}
/**
* 获取显示"下一页"的代码
*
* @param string $style
* @return string
*/
function next_page($)
{
if($this->nowindex<$this->totalpage){
return $this->_get_link($this->_get_url(/blog_article/$this->nowindex 1/index.html),$this->next_page,$style);
}
return '<span .$style.'">'.$this->next_page.'</span>';
}
/**
* 获取显示“上一页”的代码
*
* @param string $style
* @return string
*/
function pre_page($)
{
if($this->nowindex>1){
return $this->_get_link($this->_get_url(/blog_article/$this->nowindex-1/index.html),$this->pre_page,$style);
}
return '<span .$style.'">'.$this->pre_page.'</span>';
}
/**
* 获取显示“首页”的代码
*
* @return string
*/
function first_page($)
{
if($this->nowindex==1){
return '<span .$style.'">'.$this->first_page.'</span>';
}
return $this->_get_link($this->_get_url(/blog_article/1/index.html),$this->first_page,$style);
}
/**
* 获取显示“尾页”的代码
*
* @return string
*/
function last_page($)
{
if($this->nowindex==$this->totalpage){
return '<span .$style.'">'.$this->last_page.'</span>';
}
return $this->_get_link($this->_get_url(/blog_article/$this->totalpage/index.html),$this->last_page,$style);
}
function nowbar($,$nowindex_)
{
$plus=ceil($this->pagebarnum/2);
if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
$begin=$this->nowindex-$plus+1;
$begin=($begin>=1)?$begin:1;
$return='';
for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
{
if($i<=$this->totalpage){
if($i!=$this->nowindex)
$return.=$this->_get_text($this->_get_link($this->_get_url(/blog_article/$i/index.html),$i,$style));
else
$return.=$this->_get_text('<span .$nowindex_style.'">'.$i.'</span>');
}else{
break;
}
$return.="\n";
}
unset($begin);
return $return;
}
/**
* 获取显示跳转按钮的代码
*
* @return string
*/
function select()
{
$return='<select name="PB_Page_Select" onchange="PageSelect()">';
for($i=1;$i<=$this->totalpage;$i++)
{
if($i==$this->nowindex){
$return.='<option value="'.$i.'" selected>'.$i.'</option>';
}else{
$return.='<option value="'.$i.'">'.$i.'</option>';
}
}
unset($i);
$return.='</select>';
return $return;
}
/**
* 获取mysql 语句中limit需要的值
*
* @return string
*/
function offset()
{
return $this->offset;
}
/**
* 控制分页显示风格(你可以增加相应的风格)
*
* @param int $mode
* @return string
*/
function show($mode=1)
{
switch ($mode)
{
case '1':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';
break;
case '2':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';
break;
case '3':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
break;
case '4':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page().$this->nowbar().$this->next_page();
break;
case '5':
return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
break;
case '6':
return $this->select();
break;
case '7':
return $this->nowbar();
break;
}
}
/*----------------private function (私有方法)-----------------------------------------------------------*/
/**
* 设置url头地址
* @param: String $url
* @return boolean
*/
function _set_url($url="")
{
if(!empty($url)){
//手动设置
$this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
}else{
//自动获取
if(empty($_SERVER['QUERY_STRING'])){
//不存在QUERY_STRING时
$this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
}else{
//
if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
//地址存在页面参数
$this->url=str_replace()($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);
$last=$this->url[strlen($this->url)-1];
if($last=='?'||$last=='&'){
$this->url.=$this->page_name."=";
}else{
$this->url.='&'.$this->page_name."=";
}
}else{
//
$this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';
}//end if
}//end if
}//end if
}
/**
* 设置当前页面
*
*/
function _set_nowindex($nowindex)
{
if(empty($nowindex)){
//系统获取
if(isset()($_GET[$this->page_name])){
$this->nowindex=intval($_GET[$this->page_name]);
}
if(isset($_POST['PB_Page_Select'])){
$this->nowindex=$_POST['PB_Page_Select'];
}
}else{
//手动设置
$this->nowindex=intval($nowindex);
}
}
/**
* 为指定的页面返回地址值
*
* @param int $pageno
* @return string $url
*/
function _get_url(/blog_article/$pageno=1/index.html)
{
return $this->url.$pageno;
}
/**
* 获取分页显示文字,比如说默认情况下_get_text('<a href="">1</a>')将返回[<a href="">1</a>]
*
* @param String $str
* @return string $url
*/
function _get_text($str)
{
return $this->format_left.$str.$this->format_right;
}
/**
* 获取链接地址
*/
function _get_link($url,$text,$){
$':'.$style.'"';
if($this->is_ajax){
//如果是使用AJAX模式
return '<a '.$style.' href="/blog_article/javascrīpt_/index.html'.$this->ajax_action_name.'(\''.$url.'\')">'.$text.'</a>';
}else{
return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
}
}
/**
* 出错处理方式
*/
function error($function,$errormsg)
{
die('Error in file <b>'.__FILE__.'</b> ,Function <b>'.$function.'()</b> :'.$errormsg);
}
}
// 继承分页类,加入数据库访问能力.
class Page extends _Page {
var $db; //db connected object
var $_Sql_Query = ''; //查询数据库的sql
var $_Total = 0; //查询到的总记录.必须先是
var $_Rst = array(); //查询到的记录.
/**
* 分页查询类库.
*
* @param String $Sql 记录查询的SQL 语句.
* @param int $pagenuber 每页多少条记录.
* @param int $pagen 当前页面.
* @param String $url 分页链接带入的参数. index.php?xx=b&bb=33
* @param String $pname 当前第几页的标记,默认是 index.php?xx=b&bb=33&page=2 如果有特殊要求
可以修改 $pname的参数. 比如: $pname='db_page',则变成: index.php?xx=b&bb=33&db_page=2
* @return Mysql_Page
*/
function Page($db, $sql_query = '', $max_rows_per_page = 20, $current_page_number = 0, $url = '', $parameters = '', $pname = 'PB_page',$otc = '*') {
$this -> db = $db;
$pos_to = strlen($sql_query);
$pos_from = strpos($sql_query, ' from', 0);
$pos_group_by = strpos($sql_query, ' group by', $pos_from);
if (($pos_group_by < $pos_to) && ($pos_group_by != false)) $pos_to = $pos_group_by;
$pos_having = strpos($sql_query, ' having', $pos_from);
if (($pos_having < $pos_to) && ($pos_having != false)) $pos_to = $pos_having;
$pos_order_by = strpos($sql_query, ' order by', $pos_from);
if (($pos_order_by < $pos_to) && ($pos_order_by != false)) $pos_to = $pos_order_by;
$reviews_count = $this -> db -> getResults("select count($otc) as total " . substr($sql_query, $pos_from, ($pos_to - $pos_from)));
$query_num_rows = $reviews_count[0]['total'];
$this -> _Total = $query_num_rows;
$num_pages = ceil($query_num_rows / $max_rows_per_page);
if ($current_page_number > $num_pages) {
$current_page_number = $num_pages;
}
$offset = ($max_rows_per_page * ($current_page_number - 1));
if ($offset < 0) $offset = 0;
if ($offset > 0) {
$offset = $offset + 1;
}
$this -> _Sql_Query = $sql_query . " limit " . $offset . ", " . $max_rows_per_page;
$this -> setData(); //查询数据库.
parent :: page(array('total' => $query_num_rows, 'perpage' => $max_rows_per_page, 'page_name' => $pname, 'url' => $url, 'parameters' => $parameters));
}
/**
* 取得当前页面的记录,返回一个数组.
*/
function findByAll() {
return $this -> _Rst;
}
/**
* 显示分页信息.
*
* @param int $model
*/
function dispaly_links($model) {
$this -> show($model);
}
/**
* 返回记录数.
*
* @return Int
*/
function getCount() {
return $this -> _Total;
}
/**
* 取查询结果记录数..
*
* @return Int
*/
function getRows() {
return count($this -> _Rst);
}
/**
* 执行查询功能.
* 计算数组.
* 私有方法.
*/
function setData() {
$this -> _Rst = $this -> db -> getResults($this -> _Sql_Query);
}
}
?>
/**
* filename: ext_page.class.php
* @package:phpbean
* descrīption:超强分页类,四种分页模式,默认采用类似baidu,google的分页风格。
* 2.0增加功能:支持自定义风格,自定义样式,同时支持PHP4和PHP5,
* example:
* 模式四种分页模式:
require_once('../libs/classes/page.class.php');
$page=new page(array('total'=>1000,'perpage'=>20));
echo 'mode:1<br>'.$page->show();
echo '<hr>mode:2<br>'.$page->show(2);
echo '<hr>mode:3<br>'.$page->show(3);
echo '<hr>mode:4<br>'.$page->show(4);
开启AJAX:
$ajaxpage=new page(array('total'=>1000,'perpage'=>20,'ajax'=>'ajax_page','page_name'=>'test'));
echo 'mode:1<br>'.$ajaxpage->show();
采用继承自定义分页显示模式。
编辑整理: http://www.
*/
class _page
{
/**
* config ,public
*/
var $page_name="PB_page";//page标签,用来控制url页。比如说xxx.php?PB_page=2中的PB_page
var $next_page='>';//下一页
var $pre_page='<';//上一页
var $first_page='First';//首页
var $last_page='Last';//尾页
var $pre_bar='<<';//上一分页条
var $next_bar='>>';//下一分页条
var $format_left='[';
var $format_right=']';
var $is_ajax=false;//是否支持AJAX分页模式
/**
* private
*
*/
var $pagebarnum=10;//控制记录条的个数。
var $totalpage=0;//总页数
var $ajax_action_name='';//AJAX动作名
var $nowindex=1;//当前页
var $url="";//url地址头
var $offset=0;
/**
* constructor构造函数
*
* @param array $array['total'],$array['perpage'],$array['nowindex'],$array['url'],$array['ajax']...
*/
function page($array)
{
if(is_array($array)){
if(!array_key_exists('total',$array))$this->error(__FUNCTION__,'need a param of total');
$total=intval($array['total']);
$perpage=(array_key_exists('perpage',$array))?intval($array['perpage']):10;
$nowindex=(array_key_exists('nowindex',$array))?intval($array['nowindex']):'';
$url=(array_key_exists('url',$array))?$array['url']:'';
}else{
$total=$array;
$perpage=10;
$nowindex='';
$url='';
}
if((!is_int($total))||($total<0))$this->error(__FUNCTION__,$total.' is not a positive integer!');
if((!is_int($perpage))||($perpage<=0))$this->error(__FUNCTION__,$perpage.' is not a positive integer!');
if(!empty($array['page_name']))$this->set('page_name',$array['page_name']);//设置pagename
$this->_set_nowindex($nowindex);//设置当前页
$this->_set_url(/blog_article/$url/index.html);//设置链接地址
$this->totalpage=ceil($total/$perpage);
$this->offset=($this->nowindex-1)*$perpage;
if(!empty($array['ajax']))$this->open_ajax($array['ajax']);//打开AJAX模式
}
/**
* 设定类中指定变量名的值,如果改变量不属于这个类,将throw一个exception
*
* @param string $var
* @param string $value
*/
function set($var,$value)
{
if(in_array($var,get_object_vars($this)))
$this->$var=$value;
else {
$this->error(__FUNCTION__,$var." does not belong to PB_Page!");
}
}
/**
* 打开倒AJAX模式
*
* @param string $action 默认ajax触发的动作。
*/
function open_ajax($action)
{
$this->is_ajax=true;
$this->ajax_action_name=$action;
}
/**
* 获取显示"下一页"的代码
*
* @param string $style
* @return string
*/
function next_page($)
{
if($this->nowindex<$this->totalpage){
return $this->_get_link($this->_get_url(/blog_article/$this->nowindex 1/index.html),$this->next_page,$style);
}
return '<span .$style.'">'.$this->next_page.'</span>';
}
/**
* 获取显示“上一页”的代码
*
* @param string $style
* @return string
*/
function pre_page($)
{
if($this->nowindex>1){
return $this->_get_link($this->_get_url(/blog_article/$this->nowindex-1/index.html),$this->pre_page,$style);
}
return '<span .$style.'">'.$this->pre_page.'</span>';
}
/**
* 获取显示“首页”的代码
*
* @return string
*/
function first_page($)
{
if($this->nowindex==1){
return '<span .$style.'">'.$this->first_page.'</span>';
}
return $this->_get_link($this->_get_url(/blog_article/1/index.html),$this->first_page,$style);
}
/**
* 获取显示“尾页”的代码
*
* @return string
*/
function last_page($)
{
if($this->nowindex==$this->totalpage){
return '<span .$style.'">'.$this->last_page.'</span>';
}
return $this->_get_link($this->_get_url(/blog_article/$this->totalpage/index.html),$this->last_page,$style);
}
function nowbar($,$nowindex_)
{
$plus=ceil($this->pagebarnum/2);
if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
$begin=$this->nowindex-$plus+1;
$begin=($begin>=1)?$begin:1;
$return='';
for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
{
if($i<=$this->totalpage){
if($i!=$this->nowindex)
$return.=$this->_get_text($this->_get_link($this->_get_url(/blog_article/$i/index.html),$i,$style));
else
$return.=$this->_get_text('<span .$nowindex_style.'">'.$i.'</span>');
}else{
break;
}
$return.="\n";
}
unset($begin);
return $return;
}
/**
* 获取显示跳转按钮的代码
*
* @return string
*/
function select()
{
$return='<select name="PB_Page_Select" onchange="PageSelect()">';
for($i=1;$i<=$this->totalpage;$i++)
{
if($i==$this->nowindex){
$return.='<option value="'.$i.'" selected>'.$i.'</option>';
}else{
$return.='<option value="'.$i.'">'.$i.'</option>';
}
}
unset($i);
$return.='</select>';
return $return;
}
/**
* 获取mysql 语句中limit需要的值
*
* @return string
*/
function offset()
{
return $this->offset;
}
/**
* 控制分页显示风格(你可以增加相应的风格)
*
* @param int $mode
* @return string
*/
function show($mode=1)
{
switch ($mode)
{
case '1':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page().$this->nowbar().$this->next_page().'第'.$this->select().'页';
break;
case '2':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page().$this->pre_page().'[第'.$this->nowindex.'页]'.$this->next_page().$this->last_page().'第'.$this->select().'页';
break;
case '3':
$this->next_page='下一页';
$this->pre_page='上一页';
$this->first_page='首页';
$this->last_page='尾页';
return $this->first_page().$this->pre_page().$this->next_page().$this->last_page();
break;
case '4':
$this->next_page='下一页';
$this->pre_page='上一页';
return $this->pre_page().$this->nowbar().$this->next_page();
break;
case '5':
return $this->pre_bar().$this->pre_page().$this->nowbar().$this->next_page().$this->next_bar();
break;
case '6':
return $this->select();
break;
case '7':
return $this->nowbar();
break;
}
}
/*----------------private function (私有方法)-----------------------------------------------------------*/
/**
* 设置url头地址
* @param: String $url
* @return boolean
*/
function _set_url($url="")
{
if(!empty($url)){
//手动设置
$this->url=$url.((stristr($url,'?'))?'&':'?').$this->page_name."=";
}else{
//自动获取
if(empty($_SERVER['QUERY_STRING'])){
//不存在QUERY_STRING时
$this->url=$_SERVER['REQUEST_URI']."?".$this->page_name."=";
}else{
//
if(stristr($_SERVER['QUERY_STRING'],$this->page_name.'=')){
//地址存在页面参数
$this->url=str_replace()($this->page_name.'='.$this->nowindex,'',$_SERVER['REQUEST_URI']);
$last=$this->url[strlen($this->url)-1];
if($last=='?'||$last=='&'){
$this->url.=$this->page_name."=";
}else{
$this->url.='&'.$this->page_name."=";
}
}else{
//
$this->url=$_SERVER['REQUEST_URI'].'&'.$this->page_name.'=';
}//end if
}//end if
}//end if
}
/**
* 设置当前页面
*
*/
function _set_nowindex($nowindex)
{
if(empty($nowindex)){
//系统获取
if(isset()($_GET[$this->page_name])){
$this->nowindex=intval($_GET[$this->page_name]);
}
if(isset($_POST['PB_Page_Select'])){
$this->nowindex=$_POST['PB_Page_Select'];
}
}else{
//手动设置
$this->nowindex=intval($nowindex);
}
}
/**
* 为指定的页面返回地址值
*
* @param int $pageno
* @return string $url
*/
function _get_url(/blog_article/$pageno=1/index.html)
{
return $this->url.$pageno;
}
/**
* 获取分页显示文字,比如说默认情况下_get_text('<a href="">1</a>')将返回[<a href="">1</a>]
*
* @param String $str
* @return string $url
*/
function _get_text($str)
{
return $this->format_left.$str.$this->format_right;
}
/**
* 获取链接地址
*/
function _get_link($url,$text,$){
$':'.$style.'"';
if($this->is_ajax){
//如果是使用AJAX模式
return '<a '.$style.' href="/blog_article/javascrīpt_/index.html'.$this->ajax_action_name.'(\''.$url.'\')">'.$text.'</a>';
}else{
return '<a '.$style.' href="'.$url.'">'.$text.'</a>';
}
}
/**
* 出错处理方式
*/
function error($function,$errormsg)
{
die('Error in file <b>'.__FILE__.'</b> ,Function <b>'.$function.'()</b> :'.$errormsg);
}
}
// 继承分页类,加入数据库访问能力.
class Page extends _Page {
var $db; //db connected object
var $_Sql_Query = ''; //查询数据库的sql
var $_Total = 0; //查询到的总记录.必须先是
var $_Rst = array(); //查询到的记录.
/**
* 分页查询类库.
*
* @param String $Sql 记录查询的SQL 语句.
* @param int $pagenuber 每页多少条记录.
* @param int $pagen 当前页面.
* @param String $url 分页链接带入的参数. index.php?xx=b&bb=33
* @param String $pname 当前第几页的标记,默认是 index.php?xx=b&bb=33&page=2 如果有特殊要求
可以修改 $pname的参数. 比如: $pname='db_page',则变成: index.php?xx=b&bb=33&db_page=2
* @return Mysql_Page
*/
function Page($db, $sql_query = '', $max_rows_per_page = 20, $current_page_number = 0, $url = '', $parameters = '', $pname = 'PB_page',$otc = '*') {
$this -> db = $db;
$pos_to = strlen($sql_query);
$pos_from = strpos($sql_query, ' from', 0);
$pos_group_by = strpos($sql_query, ' group by', $pos_from);
if (($pos_group_by < $pos_to) && ($pos_group_by != false)) $pos_to = $pos_group_by;
$pos_having = strpos($sql_query, ' having', $pos_from);
if (($pos_having < $pos_to) && ($pos_having != false)) $pos_to = $pos_having;
$pos_order_by = strpos($sql_query, ' order by', $pos_from);
if (($pos_order_by < $pos_to) && ($pos_order_by != false)) $pos_to = $pos_order_by;
$reviews_count = $this -> db -> getResults("select count($otc) as total " . substr($sql_query, $pos_from, ($pos_to - $pos_from)));
$query_num_rows = $reviews_count[0]['total'];
$this -> _Total = $query_num_rows;
$num_pages = ceil($query_num_rows / $max_rows_per_page);
if ($current_page_number > $num_pages) {
$current_page_number = $num_pages;
}
$offset = ($max_rows_per_page * ($current_page_number - 1));
if ($offset < 0) $offset = 0;
if ($offset > 0) {
$offset = $offset + 1;
}
$this -> _Sql_Query = $sql_query . " limit " . $offset . ", " . $max_rows_per_page;
$this -> setData(); //查询数据库.
parent :: page(array('total' => $query_num_rows, 'perpage' => $max_rows_per_page, 'page_name' => $pname, 'url' => $url, 'parameters' => $parameters));
}
/**
* 取得当前页面的记录,返回一个数组.
*/
function findByAll() {
return $this -> _Rst;
}
/**
* 显示分页信息.
*
* @param int $model
*/
function dispaly_links($model) {
$this -> show($model);
}
/**
* 返回记录数.
*
* @return Int
*/
function getCount() {
return $this -> _Total;
}
/**
* 取查询结果记录数..
*
* @return Int
*/
function getRows() {
return count($this -> _Rst);
}
/**
* 执行查询功能.
* 计算数组.
* 私有方法.
*/
function setData() {
$this -> _Rst = $this -> db -> getResults($this -> _Sql_Query);
}
}
?>
[2]PHP中使用Insert、Update语句的构造类
来源: 互联网 发布时间: 2013-12-24
很简单的一段代码,学习下使用Insert和Update语句实现构造类的方法。
1,调用方法
代码示例:
<?php
$mysql = new sqlstr("table1");
$mysql->set("name","value");
$mysql->set("name","1",true);
echo $mysql->insertSql();
$mysql = new sqlstr("table1");
$mysql->set("name","value");
$mysql->set("name","1",true);
echo $mysql->insertSql();
2,insert与update实现的php构造类
代码示例:
<?php
/**
* Insert、Update语句的构造类
* edit: www.
*/
class sqlstr
{
private $param=array();
private $tablename;
function sqlstr($tablename)
{
$this->tablename = $tablename;
}
public function set($name,$value,$isnum=false){
$value = str_replace()("'","''",$value);
$this->param[$name]=array($value,$isnum);
}
public function insertSql(){
$keys="";
$values="";
foreach($this->param as $key =>$value){
$keys = $keys . $key . ",";
if($value[1]){
$values = $values . $value[0] . ",";
}else{
$values = $values . "'" . $value[0] . "',";
}
}
if($keys!=""){$keys=substr($keys,0,strlen($keys)-1) ;}
if($values!=""){$values=substr($values,0,strlen($values)-1) ;}
return "insert into " .$this->tablename ."($keys) values($values)";
}
public function updateSql($cond){
$group="";
foreach($this->param as $key =>$value){
$group .= $key . "=";
if($value[1]){
$group.= $value[0] . ",";
}else{
$group.= "'" . $value[0] . "',";
}
}
if($group!=""){$group=substr($group,0,strlen($group)-1) ;}
return "update " . $this->tablename ." set $group where " . $cond;
}
}
/**
* Insert、Update语句的构造类
* edit: www.
*/
class sqlstr
{
private $param=array();
private $tablename;
function sqlstr($tablename)
{
$this->tablename = $tablename;
}
public function set($name,$value,$isnum=false){
$value = str_replace()("'","''",$value);
$this->param[$name]=array($value,$isnum);
}
public function insertSql(){
$keys="";
$values="";
foreach($this->param as $key =>$value){
$keys = $keys . $key . ",";
if($value[1]){
$values = $values . $value[0] . ",";
}else{
$values = $values . "'" . $value[0] . "',";
}
}
if($keys!=""){$keys=substr($keys,0,strlen($keys)-1) ;}
if($values!=""){$values=substr($values,0,strlen($values)-1) ;}
return "insert into " .$this->tablename ."($keys) values($values)";
}
public function updateSql($cond){
$group="";
foreach($this->param as $key =>$value){
$group .= $key . "=";
if($value[1]){
$group.= $value[0] . ",";
}else{
$group.= "'" . $value[0] . "',";
}
}
if($group!=""){$group=substr($group,0,strlen($group)-1) ;}
return "update " . $this->tablename ." set $group where " . $cond;
}
}
[3]php批量更改数据库表前缀的方法
来源: 互联网 发布时间: 2013-12-24
本节内容:
批量替换或添加数据库表前缀
例子,批量更改数据库、表的前缀
代码示例:
<?php
$database = "databaseName"; //数据库名称
$user = "root"; //数据库用户名
$pwd = "pwd"; //数据库密码
$replace ='pre_';//替换后的前缀
$seach = 'pre1_';//要替换的前缀
$db=mysql_connect()("localhost","$user","$pwd") or die("连接数据库失败:".mysql_error()); //连接数据库
$tables = mysql_list_tables("$database");
while($name = mysql_fetch_array($tables)) {
$table = str_replace()($seach,$replace,$name['0']);
mysql_query()("rename table $name[0] to $table");
}
// www.
?>
添加前缀的话,可以做如下修改:
$table = str_replace($seach,$replace,$name['0']);
修改为:
$table = $replace.$name['0'];
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