PHP 实现文章内容自动分页类

PHP高级技术

page_word = $page_word;
        $this->cut_tag = array("", "
", "", "
", "”。", "。", ".", "!", "……", "?", ","); $this->cut_custom = "{nextpage}"; if (intval(trim($_GET['page']))) { $tmp_page = intval(trim($_GET['page'])); } else { $tmp_page = 0; } $this->page = $tmp_page > 1 ? $tmp_page : 1; $this->pagestr = $pagestr; } 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(); // $str = ''; // for ($i = 1;$i <= $this->sum_page;$i++) { // if ($i == $this->page) { // $str.= "" . $i . " "; // } else { // $str.= "" . $i . " "; // } // } // return $str; // } // function set_url() { // parse_str($_SERVER["QUERY_STRING"], $arr_url); // unset($arr_url["page"]); // if (empty($arr_url)) { // $str = "page="; // } else { // $str = http_build_query($arr_url) . "&page="; // } // $this->url = "http://" . $_SERVER["HTTP_HOST"] . $_SERVER["PHP_SELF"] . "?" . $str; // } } ?>