php 長文章自動/手動分頁類

<?php<br />/*<br />* 長文章分頁類<br />* @package cutpage<br />* @author yytcpt(無影)<br />* @version 2008-03-27<br />* @copyrigth http://www.d5s.cn/<br />*/<br /> class cutpage{<br /> var $pagestr; //被切分的內容<br /> var $pagearr; //被切分文字的數組格式<br /> var $sum_word; //總字數(UTF-8格式的中文字元也包括)<br /> var $sum_page; //總頁數<br /> var $page_word; //一頁多少字<br /> var $cut_tag; //自動分頁符<br /> var $cut_custom; //手動分頁符<br /> var $ipage; //當前切分的頁數，第幾頁<br /> var $url;<br /> function __construct(){<br /> $this->page_word = 1000;<br /> $this->cut_tag = array("</table>", "</div>", "</p>", "<br/>", "”。", "。", ".", "！", "……", "？", ",");<br /> $this->cut_custom = "{nextpage}";<br /> $tmp_page = intval(trim($_GET["ipage"]));<br /> $this->ipage = $tmp_page>1?$tmp_page:1;<br /> }<br /> //統計總字數<br /> function get_page_word(){<br /> $this->sum_word = $this->strlen_utf8($this->pagestr);<br /> return $this->sum_word;<br /> }<br /> /* 統計UTF-8編碼的字元長度<br /> * 一個中文，一個英文都為一個字<br /> */<br /> function strlen_utf8($str){<br /> $i = 0;<br /> $count = 0;<br /> $len = strlen ($str);<br /> while ($i < $len){<br /> $chr = ord ($str[$i]);<br /> $count++;<br /> $i++;<br /> if ($i >= $len)<br /> break;<br /> if ($chr & 0x80){<br /> $chr <<= 1;<br /> while ($chr & 0x80) {<br /> $i++;<br /> $chr <<= 1;<br /> }<br /> }<br /> }<br /> return $count;<br /> }<br /> //設定自動分頁符號<br /> function set_cut_tag($tag_arr=array()){<br /> $this->cut_tag = $tag_arr;<br /> }<br /> //設定手動分頁符<br /> function set_cut_custom($cut_str){<br /> $this->cut_custom = $cut_str;<br /> }<br /> function show_cpage($ipage=0){<br /> $this->cut_str();<br /> $ipage = $ipage ? $ipage:$this->ipage;<br /> return $this->pagearr[$ipage];<br /> }<br /> function cut_str(){<br /> $str_len_word = strlen($this->pagestr); //擷取使用strlen得到的字元總數<br /> $i = 0;<br /> if ($str_len_word<=$this->page_word){ //如果總字數小於一頁顯示字數<br /> $page_arr[$i] = $this->pagestr;<br /> }else{<br /> if (strpos($this->pagestr, $this->cut_custom)){<br /> $page_arr = explode($this->cut_custom, $this->pagestr);<br /> }else{<br /> $str_first = substr($this->pagestr, 0, $this->page_word); //0-page_word個文字 cutStr為func.global中的函數<br /> foreach ($this->cut_tag as $v){<br /> $cut_start = strrpos($str_first, $v); //逆向尋找第一個分頁符的位置<br /> if ($cut_start){<br /> $page_arr[$i++] = substr($this->pagestr, 0, $cut_start).$v;<br /> $cut_start = $cut_start + strlen($v);<br /> break;<br /> }<br /> }<br /> if (($cut_start+$this->page_word)>=$str_len_word){ //如果超過總字數<br /> $page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);<br /> }else{<br /> while (($cut_start+$this->page_word)<$str_len_word){<br /> foreach ($this->cut_tag as $v){<br /> $str_tmp = substr($this->pagestr, $cut_start, $this->page_word); //取第cut_start個字後的page_word個字元<br /> $cut_tmp = strrpos($str_tmp, $v); //找出從第cut_start個字之後，page_word個字之間，逆向尋找第一個分頁符的位置<br /> if ($cut_tmp){<br /> $page_arr[$i++] = substr($str_tmp, 0, $cut_tmp).$v;<br /> $cut_start = $cut_start + $cut_tmp + strlen($v);<br /> break;<br /> }<br /> }<br /> }<br /> if (($cut_start+$this->page_word)>$str_len_word){<br /> $page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);<br /> }<br /> }<br /> }<br /> }<br /> $this->sum_page = count($page_arr); //總頁數<br /> $this->pagearr = $page_arr;<br /> }<br /> //顯示上一條，下一條<br /> function show_prv_next(){<br /> $this->set_url();<br /> if ($this->sum_page>1 and $this->ipage<$this->sum_page){<br /> $str = "<a href='".$this->url.($this->ipage+1)."'>下一頁</a>　";<br /> }<br /> if ($this->sum_page>1 and $this->ipage>1){<br /> $str.= "<a href='".$this->url.($this->ipage-1)."'>上一頁</a>";<br /> }<br /> return $str;<br /> }<br /> function show_page_select(){<br /> if ($this->sum_page>1){<br /> $str = " <select onchange=/"location.href=this.options[this.selectedIndex].value/">";<br /> for ($i=1; $i<=$this->sum_page; $i++){<br /> $str.= "<option value='".$this->url.$i."' ".(($this->ipage)==$i ? " selected='selected'":"").">第".$i."頁</option>";<br /> }<br /> $str.= "</select>";<br /> }<br /> return $str;<br /> }<br /> function show_page_select_wap(){<br /> if ($this->sum_page>1){<br /> $str = "<select ivalue='".($this->ipage-1)."'>";<br /> for ($i=1; $i<=$this->sum_page; $i++){<br /> $str.= "<option onpick='".$this->url.$i."'>第".$i."節</option>";<br /> }<br /> $str.= "</select>";<br /> }<br /> return $str;<br /> }<br /> function set_url(){<br /> parse_str($_SERVER["QUERY_STRING"], $arr_url);<br /> unset($arr_url["ipage"]);<br /> if (emptyempty($arr_url)){<br /> $str = "ipage=";<br /> }else{<br /> $str = http_build_query($arr_url)."&ipage=";<br /> }<br /> $this->url = "http://".$_SERVER["HTTP_HOST"].$_SERVER["PHP_SELF"]."?".$str;<br /> }<br /> }<br />?>

執行個體代碼：請以UTF-8的檔案編碼進行測試。

include('cutpage.php');<br /> header("content-type:text/html;charset=utf-8");//設定頁面編碼<br /> //自訂的長文章字串，可以包含 html 代碼，若字串中有手動分頁符 {nextpage} 則優先按手動分頁符進行分頁<br /> $content = file_get_contents('text.txt');<br /> $ipage = $_GET["ipage"]? intval($_GET["ipage"]):1;<br /> $CP = new cutpage();<br /> $CP->pagestr = $content;<br /> $CP->cut_str();<br /> echo $CP->pagearr[$ipage-1]."<hr/>";<br /> echo $CP->show_prv_next();