PHP长文章分页的使用例子-php教程

文章分页用到比较多同时使用过cms的朋友也碰到过都具备了文章分页功能了,下面我们自己来看一个关于文章分页的例子,具体的操作步骤如下所示,希望文章能够帮助到各位朋友.

content.txt:这个文件里面放的是内容了,如果你是与mysql数据库结合的话只要把把这一句换成你的数据库的内容即可.

index.php文件:

<link rel="stylesheet" type="text/css" href="http:///jquery/css/common.css" />
<style type="text/css">
.demo{width:80%;margin:50px auto 10px auto;padding:10px;}
.demo p{line-height:30px;text-indent:2em}
.demo h3{font-size:24px;text-align:center;padding:10px}
@media (max-width: 480px){
.demo{width:360px;margin:50px auto 10px auto;padding:10px;}
.demo img{width:90%}
.demo h3{font-size:1.5em;line-height:1.9em}
}
.pages{text-align:center;border-top:1px solid #d3d3d3;margin-top:10px; padding-top:10px}
.pages a{display:inline-block;margin:4px;padding:4px 8px;background:#f9f9f9;border:1px solid #d9d9d9}
.pages a.cur{cursor:default;background:#d3d3d3;color:#434343}
.pages a.cur:hover{text-decoration:none}
</style>
<div class="head">
<div class="head_inner clearfix">
<ul >
<li><a href="http://">首页</a></li>
<li><a href="http:///templates">网站模板</a></li>
<li><a href="http:///js">网页特效</a></li>
<li><a href="http:///php">PHP</a></li>
<li><a href="http:///site">精选网址</a></li>
</ul>
<a class="logo" href="http://"><img src="http:///Public/images/logo.jpg" alt="素材火logo" /></a>
</div>
</div>
<div class="container">
<div class="demo">
<h2 class="title"><a href="http:///js/639.html">教程：PHP长文章分页教程与演示</a></h2>
<h3>未来10年千万人将没有工作？</h3>
<?php
include('page.class.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('content.txt');
$ipage = isset($_GET["ipage"]) ? intval($_GET["ipage"]) : 1;
$CP = new cutpage($content);
$page = $CP->cut_str();
echo $page[$ipage - 1];
echo '<div class="pages">' . $CP->pagenav() . '</div>';
?>
</div>
</div>

长文章分页类 page.class.php:

<?php
/*
* 长文章分页类
*/
class cutpage{
private $pagestr; //被切分的内容
private $pagearr; //被切分文字的数组格式
private $sum_word; //总字数(UTF-8格式的中文字符也包括)
private $sum_page; //总页数
private $page_word; //一页多少字
private $cut_tag; //自动分页符
private $cut_custom; //手动分页符
private $ipage; //当前切分的页数，第几页
private $url;
function __construct($pagestr,$page_word=1000){
$this->page_word = $page_word;
$this->cut_tag = array("</table>", "</div>", "</p>", "<br/>", "”。", "。", ".", "！", "……", "？", ",");
$this->cut_custom = "{nextpage}";
$tmp_page = isset($_GET["ipage"]) ? intval($_GET["ipage"]) : 1;
$this->ipage = $tmp_page>1?$tmp_page:1;
$this->pagestr = $pagestr;
}
//统计总字数
function get_page_word(){
$this->sum_word = $this->strlen_utf8($this->pagestr);
return $this->sum_word;
}
/* 统计UTF-8编码的字符长度
* 一个中文，一个英文都为一个字
*/
function strlen_utf8($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;
return $page_arr;
}
//显示上一条，下一条
function pagenav(){
$this->set_url();
$str = '';
//$str .= $this->ipage.'/'.$this->sum_page;
for($i=1;$i<=$this->sum_page;$i++){
if($i==$this->ipage) {
$str.= "<a href='#' class='cur'>".$i."</a> ";
}else{
$str.= "<a href='".$this->url.$i."'>".$i."</a> ";
}
}
return $str;
}
function show_prv_next2(){
$this->set_url();
$str = '';
if ($this->sum_page>1 and $this->ipage>1){
$str.= "<a href='".$this->url.($this->ipage-1)."'>上一页</a> ";
}
if ($this->sum_page>1 and $this->ipage<$this->sum_page){
$str .= "<a href='".$this->url.($this->ipage+1)."'>下一页</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"]);//phpfensi.com
if (emptyempty($arr_url)){
$str = "ipage=";
}else{
$str = http_build_query($arr_url)."&ipage=";
}
$this->url = "http://".$_SERVER["HTTP_HOST"].$_SERVER["PHP_SELF"]."?".$str;
}
}
?>

PHP长文章分页的使用例子

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