长文章 自动/手动 分页类
<?php
// $Id:$
/*
* 长文章分页类
* @package cutpage
* @author yytcpt(无影)
* @version 2008-03-27
*/
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 = 1000;
$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 $this->sum_word;
}
/* 统计UTF-8编码的字符长度
* 一个中文,一个英文都为一个字
*/
function strlen_utf8($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;
}
//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;
}
}
如果您加了新功能,或者是有改进,请与大家一起分享。
长文章分页类,可以手工指定分页符,也可以让程序自动分页。
实例代码:请以UTF-8的文件编码进行测试。
代码:
<?php
include ('cutpage.php');
header("content-type:text/html;charset=utf-8"); //设置页面编码
//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;
$CP = new cutpage();
$CP->pagestr = $content;
$CP->cut_str();
echo $CP->pagearr[$ipage - 1] . "<hr/>";
echo $CP->show_prv_next();永久链接:http://www.phprm.com/code/89b72247c54127f35dbffb8730b8793a.html
转载随意!带上文章地址吧。