PHP codeigniter framework paging class_PHP tutorial

codeigniter has very easy to use pagination classes. In this tutorial I will do a simple example of returning a set of results from a database tutorial and paginating those results. I will use the latest version of ci. The paging class has not been modified (at least I think not), it is always good to use the latest stable version of the framework
Call method

//Create paging
$config = array();
$this->load->library('hpages');
$config['base_url'] = "channel/lists/c{$slug}/{page}";
$ config['total_rows'] = intval($total);
$config['per_page'] = $pagesize;
$config['uri_segment'] = 1;
$config['num_links'] = 3;
$config['underline_uri_seg'] = 1; //The location of the page number in the underline uri
$this->hpages->init($config);
$this- >template['lists'] = $list;
$this->template['pagestr'] = $this->hpages->create_links(1);

PHP tutorial file code

/**
* file_name: hpages.php
* Haohai network front desk pagination class
*
* @package haohailuo
* @AutHor by Laurence.xu & lt; haohailuo@163.com > * @copyright copyright (c) 2010, haohailuo, inc.
* @link http://www.haohailuo.com
* @since version 1.0 $id$
* @version wed dec 08 12 :21:17 cst 2010
* @filesource
*/
class hpages {

var $base_url = ''; var $per_page                                                                                                                                                                                                                                                                                               due = 2; //Number of left and right links to be displayed
var $cur_page                                                                                                  '; //Home page character
var $next_link '>'; //Characters for the next page
var $last_link                                                                                                                                                                                                                                                                                                    🎜> var $uri_segment                                                                                 Starting html tag
var $full_tag_close = ''; paging area Ending html tag
var $first_tag_open = ''; //HTML tag at the beginning of the homepage
var $first_tag_close = ' '; //HTML tag at the end of the homepage var $last_tag_open = ' '; / /The html tag that starts on the last page
var $last_tag_close = '';                                              ...
var $cur_tag_close = ''; //The end of the current page...
var $next_tag_open                                                                                                                                          .                       = ' ' ; //"Number" The link's opening tag.
var $num_tag_close = ''; //The closing tag of the "number" link.
var $page_query_string = false;
var $query_string_segment = 'per_page';
var $page_mode = 'default' ;             //default for add page at the end? if include {page}, will replace it for current page.
var $underline_uri_seg = -1;                                          ​​​​​​ //Customize the current page number, if this value exists, The system will not automatically determine the current page number, and it will not be enabled by default.

function hpages() {
if (file_exists(apppath.'config/pagination.php')) {
require_once(apppath.'config/pagination.php');
foreach ($config as $key=>$val) {
                                                                                                                             🎜>             
                                                                                       hpages class initialized");
}
 
/**
* Initialization parameters
*
* @see init()
* @author laurence.xu
* @version wed dec 08 12:26:07 cst 2010
* @param $params Parameters to be initialized
*/
function init($params = array()) {
if (count($params) > 0) {
foreach ($params as $key => $ Val) { if (isset ($ this-& gt; $ key)) {
$ this-& gt; $ key = $ value; } /**
* Create paginated links
*
* @see create_links()
* @author laurence.xu
* @version wed dec 08 15:02: 27 cst 2010
                                                                                                          * /
Function Create_links ($ show_info = false, $ top_info = false) {
// If there is no record or 0 number per page, return Empty if ($ this- & gt; total_rows == 0 || $ this- & gt; per_page == 0) {
Return ';
}

// Calculate the total page Number
$num_pages = ceil($this->total_rows / $this->per_page);

                //只有一页,返回空
                if ($num_pages == 1 && !$show_info) {
                        return '';
                }
               
                $ci =& get_instance();

                //获取当前页编号
                if ($ci->config->item('enable_query_strings') === true || $this->page_query_string === true) {
                        if ($ci->input->get($this->query_string_segment) != 0) {
                                $this->cur_page = $ci->input->get($this->query_string_segment);

                                // prep the current page - no funny business!
                                $this->cur_page = (int) $this->cur_page;
                        }
                } else {
                        if (intval($this->custom_cur_page) > 0) {
                                $this->cur_page = (int) $this->custom_cur_page;
                        }else{
                                $uri_segment = $ci->uri->segment($this->uri_segment, 0);
                                if ( !empty($uri_segment) ) {
                                        $this->cur_page = $uri_segment;
                                        //如果有下划线
                                        if ($this->underline_uri_seg >= 0) {
                                                if (strpos($this->cur_page, '-') !== false) {
                                                        $arr = explode('-', $this->cur_page);
                                                }else {
                                                        $arr = explode('_', $this->cur_page);
                                                }
                                                $this->cur_page = $arr[$this->underline_uri_seg];
                                                unset($arr);
                                        }
                                        // prep the current page - no funny business!
                                        $this->cur_page = (int) $this->cur_page;
                                }
                        }
                }
                //echo $this->cur_page;exit;
                //左右显示的页码个数
                $this->num_links = (int)$this->num_links;

                if ($this->num_links < 1) {
                        show_error('your number of links must be a positive number.');
                }

                if ( ! is_numeric($this->cur_page) || $this->cur_page < 1) {
                        $this->cur_page = 1;
                }
               
                //如果当前页数大于总页数,则赋值给当前页数最大值
                if ($this->cur_page > $num_pages) {
                        $this->cur_page = $num_pages;
                }

                $uri_page_number = $this->cur_page;

                if ($ci->config->item('enable_query_strings') === true || $this->page_query_string === true) {
                        $this->base_url = rtrim($this->base_url).'&'.$this->query_string_segment.'=';
                } else {
                        $this->base_url = rtrim($this->base_url, '/') .'/';
                }
               
                if (strpos($this->base_url, "{page}") !== false) {
                        $this->page_mode = 'replace';
                }
               
                $output = $top_output = '';
                //数据总量信息
                if ($show_info) {
                        $output = " 共".$this->total_rows ."条记录 {$this->cur_page}/".$num_pages."页 每页{$this->per_page}条 ";
                }
                //数据信息，显示在上面，以供提醒
                if ($top_info) {
                        $top_output = " 共 ".$this->total_rows ." 条记录 第{$this->cur_page}页/共".$num_pages."页 ";
                }
                //判断是否要显示首页
                if  ($this->cur_page > $this->num_links+1) {
                        $output .= $this->first_tag_open.''.$this->first_link.''.$this->first_tag_close;
                }
               
                //显示上一页
                if  ($this->cur_page != 1) {
                        $j = $this->cur_page - 1;
                        if ($j == 0) $j = '';
                        $output .= $this->prev_tag_open.''.$this->prev_link.''.$this->prev_tag_close;
                }
               
                //显示中间页
                for ($i=1; $i <= $num_pages; $i++){
                        if ($i < $this->cur_page-$this->num_links || $i > $this->cur_page+$this->num_links) {
                                continue;
                        }
                       
                        //显示中间页数
                        if($this->cur_page == $i){
                                $output .= $this->cur_tag_open.$i.$this->cur_tag_close; //当前页
                        }else {
                                $output .= $this->num_tag_open.''.$i.''.$this->num_tag_close;
                        }
                }
               
                //显示下一页
                if  ($this->cur_page < $num_pages) {
                        $k = $this->cur_page + 1;
                        $output .= $this->next_tag_open.''.$this->next_link.''.$this->next_tag_close;
                }
               
                //显示尾页
                if (($this->cur_page + $this->num_links) < $num_pages) {
                        $output .= $this->last_tag_open.''.$this->last_link.''.$this->last_tag_close;
                }

                $output = preg_replace("#([^:])//+#", "1/", $output);

                // add the wrapper html if exists
                $output = $this->full_tag_open.$output.$this->full_tag_close;

                if ($top_info) {
                        return array($output, $top_output);
                }else {
                        return $output;
                }
        }
       
        /**
* Create link url address
* *
* @param $str
*/
        function makelink($str = '') {
                if($this->page_mode == 'default') {
                        return $this->_forsearch($this->base_url.$str);
                } else {
                        $url = $this->base_url;
                        if ($str == 1) {
                                $url = str_replace('/{page}', '', $this->base_url);
                        }
                        $url = str_replace("{page}", $str, $url);
                       
                        return $this->_forsearch($url);
                }
        }
       
        /**
         * 处理url地址
         *
         * @see                _forsearch()
         * @author        laurence.xu
         * @version        wed dec 08 14:33:58 cst 2010
         * @param        $string pinfo
         * @return       
       */
        function _forsearch($string) {
                $length = strlen($string) - 1;
                if($string{$length} == '/') {
                        $string = rtrim($string, '/');
                }
               
                return site_url($string);
return $string;
}
}

// end pagination class

/* end of file hpages.php */
/* location: ./system/ libraries/hpages.php */

http://www.bkjia.com/PHPjc/444803.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/444803.htmlTechArticlecodeigniter has very easy to use pagination classes. In this tutorial I will do a simple example of returning a set of results from a database tutorial and paginating those results. I will use the latest version of...