1. require "page.class.php"; 
2. $neirong = "內容內容內容內容內容內容內容內容內容內容內容內容內容內容"; 
3. $content = file_get_contents($neirong);  
4. $ipage = isset($_GET["ipage"]) ? intval($_GET["ipage"]) : 1;  
5. $CP = new cutpage($content);  
6. $page = $CP->cut_str();  
7. echo $page[$ipage - 1];  
8. echo '' . $CP->pagenav() . ''; 
9.  
10. //class類 
11.  
12. //page.class.php 
13.  
14. <?php     
15. /*   
16. *  長文章分頁類      
17. */   
18.     class cutpage{     
19.         private $pagestr;       //被切分的內容     
20.         private $pagearr;       //被切分文字的數組格式     
21.         private $sum_word;      //總字數(UTF-8格式的中文字符也包括)     
22.         private $sum_page;      //總頁數     
23.         private $page_word;     //一頁多少字     
24.         private $cut_tag;       //自動分頁符     
25.         private $cut_custom;    //手動分頁符     
26.         private $ipage;         //當前切分的頁數，第幾頁     
27.         private $url;     
28.           
29.         function __construct($pagestr,$page_word=1000){     
30.             $this->page_word = $page_word;     
31.             $this->cut_tag = array("</table>", "</div>", "</p>", "<br/>", "”。", "。", ".", "！", "……", "？", ",");     
32.             $this->cut_custom = "{nextpage}";     
33.             $tmp_page = isset($_GET["ipage"]) ? intval($_GET["ipage"]) : 1;     
34.             $this->ipage = $tmp_page>1?$tmp_page:1;  
35.             $this->pagestr = $pagestr; 
36.         }     
37.         //統計總字數     
38.         function get_page_word(){     
39.             $this->sum_word = $this->strlen_utf8($this->pagestr);     
40.             return $this->sum_word;     
41.         }     
42.         /*  統計UTF-8編碼的字符長度   
43.          *  一個中文，一個英文都為一個字   
44.          */   
45.         function strlen_utf8($str){     
46.            $i = 0;     
47.            $count = 0;     
48.            $len = strlen ($str);     
49.            while ($i < $len){     
50.                $chr = ord ($str[$i]);     
51.                $count++;     
52.                $i++;     
53.                if ($i >= $len)     
54.                    break;     
55.                if ($chr & 0x80){     
56.                    $chr <<= 1;     
57.                    while ($chr & 0x80) {     
58.                        $i++;     
59.                        $chr <<= 1;     
60.                    }     
61.                }     
62.            }     
63.            return $count;     
64.         }     
65.         //設置自動分頁符號     
66.         function set_cut_tag($tag_arr=array()){     
67.             $this->cut_tag = $tag_arr;     
68.         }     
69.         //設置手動分頁符     
70.         function set_cut_custom($cut_str){     
71.             $this->cut_custom = $cut_str;     
72.         }     
73.         function show_cpage($ipage=0){     
74.             $this->cut_str();     
75.             $ipage = $ipage ? $ipage:$this->ipage;     
76.             return $this->pagearr[$ipage];     
77.         }     
78.         function cut_str(){     
79.             $str_len_word = strlen($this->pagestr);     //獲取使用strlen得到的字符總數     
80.             $i = 0;     
81.             if ($str_len_word<=$this->page_word){   //如果總字數小于一頁顯示字數     
82.                 $page_arr[$i] = $this->pagestr;     
83.             }else{     
84.                 if (strpos($this->pagestr, $this->cut_custom)){     
85.                     $page_arr = explode($this->cut_custom, $this->pagestr);     
86.                 }else{     
87.                     $str_first = substr($this->pagestr, 0, $this->page_word);   //0-page_word個文字    cutStr為func.global中的函數     
88.                     foreach ($this->cut_tag as $v){     
89.                         $cut_start = strrpos($str_first, $v);       //逆向查找第一個分頁符的位置     
90.                         if ($cut_start){     
91.                             $page_arr[$i++] = substr($this->pagestr, 0, $cut_start).$v;     
92.                             $cut_start = $cut_start + strlen($v);     
93.                             break;     
94.                         }     
95.                     }     
96.                     if (($cut_start+$this->page_word)>=$str_len_word){  //如果超過總字數     
97.                         $page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);     
98.                     }else{     
99.                         while (($cut_start+$this->page_word)<$str_len_word){     
100.                             foreach ($this->cut_tag as $v){     
101.                                 $str_tmp = substr($this->pagestr, $cut_start, $this->page_word);        //取第cut_start個字后的page_word個字符     
102.                                 $cut_tmp = strrpos($str_tmp, $v);       //找出從第cut_start個字之后，page_word個字之間，逆向查找第一個分頁符的位置     
103.                                 if ($cut_tmp){     
104.                                     $page_arr[$i++] = substr($str_tmp, 0, $cut_tmp).$v;     
105.                                     $cut_start = $cut_start + $cut_tmp + strlen($v);     
106.                                     break;     
107.                                 }     
108.                             }       
109.                         }     
110.                         if (($cut_start+$this->page_word)>$str_len_word){     
111.                             $page_arr[$i++] = substr($this->pagestr, $cut_start, $this->page_word);     
112.                         }     
113.                     }     
114.                 }     
115.             }     
116.             $this->sum_page = count($page_arr);     //總頁數     
117.             $this->pagearr = $page_arr;   
118.             return $page_arr; 
119.         }     
120.         //顯示上一條，下一條     
121.         function pagenav(){     
122.             $this->set_url();     
123.             $str = ''; 
124.               
125.             //$str .= $this->ipage.'/'.$this->sum_page; 
126.               
127.             for($i=1;$i<=$this->sum_page;$i++){ 
128.                 if($i==$this->ipage) { 
129.                     $str.= "<a href='#' class='cur'>".$i."</a> "; 
130.                 }else{ 
131.                     $str.= "<a href='".$this->url.$i."'>".$i."</a> "; 
132.                 } 
133.             } 
134.               
135.                    
136.             return $str;     
137.         }     
138.         function show_prv_next2(){     
139.             $this->set_url();     
140.             $str = ''; 
141.               
142.               
143.               
144.             if ($this->sum_page>1 and $this->ipage>1){     
145.                 $str.= "<a href='".$this->url.($this->ipage-1)."'>上一頁</a> ";     
146.             }    
147.             if ($this->sum_page>1 and $this->ipage<$this->sum_page){     
148.                 $str .= "<a href='".$this->url.($this->ipage+1)."'>下一頁</a>";     
149.             }            
150.             return $str;     
151.         }     
152.         function show_page_select(){     
153.             if ($this->sum_page>1){     
154.                 $str = "   <select onchange='location.href=this.options[this.selectedIndex].value'>";     
155.                 for ($i=1; $i<=$this->sum_page; $i++){     
156.                     $str.= "<option value='".$this->url.$i."' ".(($this->ipage)==$i ? " selected='selected'":"").">第".$i."頁</option>";     
157.                 }     
158.                 $str.= "</select>";     
159.             }     
160.             return $str;     
161.         }     
162.         function show_page_select_wap(){     
163.             if ($this->sum_page>1){     
164.                 $str = "<select ivalue='".($this->ipage-1)."'>";     
165.                 for ($i=1; $i<=$this->sum_page; $i++){     
166.                     $str.= "<option onpick='".$this->url.$i."'>第".$i."節</option>";     
167.                 }     
168.                 $str.= "</select>";     
169.             }     
170.             return $str;     
171.         }     
172.         function set_url(){     
173.             parse_str($_SERVER["QUERY_STRING"], $arr_url);     
174.             unset($arr_url["ipage"]);     
175.             if (emptyempty($arr_url)){     
176.                 $str = "ipage=";     
177.             }else{     
178.                 $str = http_build_query($arr_url)."&ipage=";     
179.             }     
180.             $this->url = "http://".$_SERVER["HTTP_HOST"].$_SERVER["PHP_SELF"]."?".$str;     
181.         }     
182.     }     
183. ?>