/*
?*?長文章分頁類
?*?@package?cutpage
?*?@author??yytcpt(無影)
?*?@version?2008-03-27
?*?@copyrigth?http://www.d5s.cn/
?*/
?class cutpage{
??var $pagestr;??//被切分的內(nèi)容
??var $pagearr;??//被切分文字的數(shù)組格式
??var $sum_word;??//總字數(shù)(UTF-8格式的中文字符也包括)
??var $sum_page;??//總頁數(shù)
??var $page_word;??//一頁多少字
??var $cut_tag;??//自動分頁符
??var $cut_custom;?//手動分頁符
??var $ipage;???//當前切分的頁數(shù)，第幾頁
??var $url;
??function __construct(){
???$this->page_word = 1000;
???$this->cut_tag = array("", "", "

", "
", "”。", "。", ".", "！", "……", "？", ",");
???$this->cut_custom = "{nextpage}";
???$tmp_page = intval(trim($_GET["ipage"]));
???$this->ipage = $tmp_page>1?$tmp_page:1;
??}
??//統(tǒng)計總字數(shù)
??function get_page_word(){
???$this->sum_word = $this->strlen_utf8($this->pagestr);
???return $this->sum_word;
??}
??/*?統(tǒng)計UTF-8編碼的字符長度
?? *?一個中文，一個英文都為一個字
?? */
??function strlen_utf8($str){
???? $i = 0;
???? $count = 0;
???? $len = strlen ($str);
???? while ($i ????? $chr = ord ($str[$i]);
????? $count++;
????? $i++;
????? if ($i >= $len)
?????? break;
????? if ($chr & 0x80){
?????? $chr ?????? while ($chr & 0x80) {
??????? $i++;
??????? $chr ?????? }
????? }
???? }
???? return $count;
??}
??//設置自動分頁符號
??function set_cut_tag($tag_arr=array()){
???$this->cut_tag = $tag_arr;
??}
??//設置手動分頁符
??function set_cut_custom($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);??//獲取使用strlen得到的字符總數(shù)
???$i = 0;
???if ($str_len_wordpage_word){?//如果總字數(shù)小于一頁顯示字數(shù)
????$page_arr[$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, $this->page_word);?//0-page_word個文字?cutStr為func.global中的函數(shù)
?????foreach ($this->cut_tag as $v){
??????$cut_start = strrpos($str_first, $v);??//逆向查找第一個分頁符的位置
??????if ($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)>=$str_len_word){?//如果超過總字數(shù)
??????$page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);
?????}else{
??????while (($cut_start+$this->page_word) ???????foreach ($this->cut_tag as $v){
????????$str_tmp = substr($this->pagestr, $cut_start, $this->page_word);??//取第cut_start個字后的page_word個字符
????????$cut_tmp = strrpos($str_tmp, $v);??//找出從第cut_start個字之后，page_word個字之間，逆向查找第一個分頁符的位置
????????if ($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($page_arr);??//總頁數(shù)
???$this->pagearr = $page_arr;
??}
??//顯示上一條，下一條
??function show_prv_next(){
???$this->set_url();
???if ($this->sum_page>1 and $this->ipagesum_page){
????$str = "下一頁　";
???}
???if ($this->sum_page>1 and $this->ipage>1){
????$str.= "上一頁";
???}
???return $str;
??}
??function show_page_select(){
???if ($this->sum_page>1){
????$str = " ? ";
????for ($i=1; $isum_page; $i++){
?????$str.= "ipage)==$i ? " selected='selected'":"").">第".$i."頁";
????}
????$str.= "";
???}
???return $str;
??}
??function show_page_select_wap(){
???if ($this->sum_page>1){
????$str = "";
????for ($i=1; $isum_page; $i++){
?????$str.= "第".$i."節(jié)";
????}
????$str.= "";
???}
???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，或者是有改進，請與大家一起分享。

長文章分頁類，可以手工指定分頁符，也可以讓程序自動分頁。

實例代碼：請以UTF-8的文件編碼進行測試。