PHP内容分页

<?php
class cutpage{
var $pagestr; //被切分的内容
var $pagearr; //被切分文字的数组格式
var $sum_word; //总字数(UTF-8格式的中文字符也包括)
var $sum_page; //总页数
var $page_word; //一页多少字
var $cut_tag; //自动分页符
var $cut_custom; //手动分页符
var $ipage; //当前切分的页数，第几页
var $url;
function __construct(){
$this->page_word = 10;
$this->cut_tag = array("</table>", "</div>", "</p>", "<br/>", "”。", "。", ".", "！", "……", "？", ",");
$this->cut_custom = "{nextpage}";
$tmp_page = intval(trim($_GET["ipage"]));
$this->ipage = $tmp_page>1?$tmp_page:1;
}
//统计总字数
function get_page_word(){
$this->sum_word = $this->strlen_utf8($this->pagestr);
return $this->sum_word;
}
function strlen_utf8($str){
$i = 0;
$count = 0;
$len = strlen ($str);
while ($i < $len){
$chr = ord ($str[$i]);
$count++;
$i++;
if ($i >= $len)
break;
if ($chr & 0x80){
$chr <<= 1;
while ($chr & 0x80) {
$i++;
$chr <<= 1;
}
}
}
return $count;
}
//设置自动分页符号
function set_cut_tag($tag_arr=array()){
$this->cut_tag = $tag_arr;
}
//设置手动分页符
function set_cut_custom($cut_str){
$this->cut_custom = $cut_str;
}
function show_cpage($ipage=0){
$this->cut_str();
$ipage = $ipage ? $ipage:$this->ipage;
return $this->pagearr[$ipage];
}
function cut_str(){
$str_len_word = strlen($this->pagestr); //获取使用strlen得到的字符总数
$i = 0;
if ($str_len_word<=$this->page_word){ //如果总字数小于一页显示字数
$page_arr[$i] = $this->pagestr;
}else{
if (strpos($this->pagestr, $this->cut_custom)){
$page_arr = explode($this->cut_custom, $this->pagestr);
}else{
$str_first = substr($this->pagestr, 0, $this->page_word); //0-page_word个文字 cutStr为func.global中的函数
foreach ($this->cut_tag as $v){
$cut_start = strrpos($str_first, $v); //逆向查找第一个分页符的位置
if ($cut_start){
$page_arr[$i++] = substr($this->pagestr, 0, $cut_start).$v;
$cut_start = $cut_start + strlen($v);
break;
}
}
if (($cut_start+$this->page_word)>=$str_len_word){ //如果超过总字数
$page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);
}else{
while (($cut_start+$this->page_word)<$str_len_word){
foreach ($this->cut_tag as $v){
$str_tmp = substr($this->pagestr, $cut_start, $this->page_word); //取第cut_start个字后的page_word个字符
$cut_tmp = strrpos($str_tmp, $v); //找出从第cut_start个字之后，page_word个字之间，逆向查找第一个分页符的位置
if ($cut_tmp){
$page_arr[$i++] = substr($str_tmp, 0, $cut_tmp).$v;
$cut_start = $cut_start + $cut_tmp + strlen($v);
break;
}
}
}
if (($cut_start+$this->page_word)>$str_len_word){
$page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);
}
}
}
}
$this->sum_page = count($page_arr); //总页数
$this->pagearr = $page_arr;
}
//显示上一条，下一条
function show_prv_next(){
$this->set_url();
if ($this->sum_page>1 and $this->ipage<$this->sum_page){
$str = "<a href='".$this->url.($this->ipage+1)."'>下一页</a>　";
}
if ($this->sum_page>1 and $this->ipage>1){
$str.= "<a href='".$this->url.($this->ipage-1)."'>上一页</a>";
}
return $str;
}
function show_page_select(){
if ($this->sum_page>1){
$str = " <select onchange=\"location.href=this.options[this.selectedIndex].value\">";
for ($i=1; $i<=$this->sum_page; $i++){
$str.= "<option value='".$this->url.$i."' ".(($this->ipage)==$i ? " selected='selected'":"").">第".$i."页</option>";
}
$str.= "</select>";
}
return $str;
}
function show_page_select_wap(){
if ($this->sum_page>1){
$str = "<select ivalue='".($this->ipage-1)."'>";
for ($i=1; $i<=$this->sum_page; $i++){
$str.= "<option onpick='".$this->url.$i."'>第".$i."节</option>";
}
$str.= "</select>";
}
return $str;
}
function set_url(){
parse_str($_SERVER["QUERY_STRING"], $arr_url);
unset($arr_url["ipage"]);
if (empty($arr_url)){
$str = "ipage=";
}else{
$str = http_build_query($arr_url)."&ipage=";
}
$this->url = "http://".$_SERVER["HTTP_HOST"].$_SERVER["PHP_SELF"]."?".$str;
}
}
?>
----------------------------------------------------------------------
<?
include('a.php');
//自定义的长文章字符串，可以包含 html 代码，若字符串中有手动分页符 {nextpage} 则优先按手动分页符进行分页
$content = file_get_contents('text.txt');
$ipage = $_GET["ipage"]? intval($_GET["ipage"]):1;
echo $ipage;

$CP = new cutpage();
$CP->pagestr = $content;
$CP->cut_str();
echo $CP->pagearr[$ipage-1]."<hr/>";
echo $CP->show_prv_next();


?>
静态页面pass
<?
$nextpage="<!--{nextpage}-->";//分页标示.
$content=explode($nextpage,$content);
$sum=count($content);
$mpurl=$_SERVER['PHP_SELF']."?newsid=$newsid";//当前页地址
if ($sum==1)
{
$smt->assign("content",$content[0]); //没有分页的情况下
$news_page="共".$sum."页";
}
else
{
$page=$_GET['page'];
if(!$page)
{
$page=0;
for($i=2;$i<=$sum;$i++)
{
$multipage .= '<a href="'.$mpurl.'&page='.$i.'" mce_href="'.$mpurl.'&page='.$i.'">['.$i.']</a> ';
}
$smt->assign("content",$content[$page]);
$news_page="共".$sum."页 [<font style="color:#FF3300" mce_style="color:#FF3300">1</font>] ".$multipage." <a href=".$mpurl.'&page='.$sum." mce_href=".$mpurl.'&page='.$sum.">尾页</a>";
}
else
{ $currentpage=$page-1;
$next=$currentpage+2;//设置下一页
$prev=$page-1;//返回上一页
for($i=1;$i<=$sum;$i++)
{
$multipage.=$i==$page?'[<font style="color:#FF3300" mce_style="color:#FF3300">'.$i.'</font>] ':'<a href="'.$mpurl.'&page='.$i.'" mce_href="'.$mpurl.'&page='.$i.'">['.$i.']</a> ';
}
if(($page<$sum)&&($page>1)){
$news_page="共".$sum."页 <a href=".$mpurl.'&page='.$prev." mce_href=".$mpurl.'&page='.$prev.">上一页</a> ".$multipage." <a href=".$mpurl.'&page='.$next." mce_href=".$mpurl.'&page='.$next.">下一页</a>";
}
elseif($page==$sum){
$news_page="共".$sum."页 ".$multipage." 尾页";
}
else{
$news_page="共".$sum."页 ".$multipage." <a href=".$mpurl.'&page='.$next." mce_href=".$mpurl.'&page='.$next.">下一页</a>";
}
$smt->assign("content",$content[$page-1]);
}
}
//新闻内容分页结束 The page next for news content end
$smt->assign("ShowPages",$news_page);
//新闻内容分页开始 The page next for news content start
$nextpage="<!--{nextpage}-->";//分页标示.
$content=explode($nextpage,$content);
$sum=count($content);
$mpurl=$_SERVER['PHP_SELF']."?newsid=$newsid";//当前页地址
if ($sum==1)
{
$smt->assign("content",$content[0]); //没有分页的情况下
$news_page="共".$sum."页";
}
else
{
$page=$_GET['page'];
if(!$page)
{
$page=0;
for($i=2;$i<=$sum;$i++)
{
$multipage .= '<a href="'.$mpurl.'&page='.$i.'" mce_href="'.$mpurl.'&page='.$i.'">['.$i.']</a> ';
}
$smt->assign("content",$content[$page]);
$news_page="共".$sum."页 [<font style="color:#FF3300" mce_style="color:#FF3300">1</font>] ".$multipage." <a href=".$mpurl.'&page='.$sum." mce_href=".$mpurl.'&page='.$sum.">尾页</a>";
}
else
{ $currentpage=$page-1;
$next=$currentpage+2;//设置下一页
$prev=$page-1;//返回上一页
for($i=1;$i<=$sum;$i++)
{
$multipage.=$i==$page?'[<font style="color:#FF3300" mce_style="color:#FF3300">'.$i.'</font>] ':'<a href="'.$mpurl.'&page='.$i.'" mce_href="'.$mpurl.'&page='.$i.'">['.$i.']</a> ';
}
if(($page<$sum)&&($page>1)){
$news_page="共".$sum."页 <a href=".$mpurl.'&page='.$prev." mce_href=".$mpurl.'&page='.$prev.">上一页</a> ".$multipage." <a href=".$mpurl.'&page='.$next." mce_href=".$mpurl.'&page='.$next.">下一页</a>";
}
elseif($page==$sum){
$news_page="共".$sum."页 ".$multipage." 尾页";
}
else{
$news_page="共".$sum."页 ".$multipage." <a href=".$mpurl.'&page='.$next." mce_href=".$mpurl.'&page='.$next.">下一页</a>";
}
$smt->assign("content",$content[$page-1]);
}
}
//新闻内容分页结束 The page next for news content end
$smt->assign("ShowPages",$news_page);

?>

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