1 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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5 * An open source application development framework for PHP 4.3.2 or newer
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7 * @package CodeIgniter
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8 * @author ExpressionEngine Dev Team
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9 * @copyright Copyright (c) 2008, EllisLab, Inc.
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10 * @license http://codeigniter.com/user_guide/license.html
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11 * @link http://codeigniter.com
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12 * @since Version 1.0
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16 // ------------------------------------------------------------------------
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21 * @package CodeIgniter
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22 * @subpackage Libraries
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23 * @category Pagination
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24 * @author ExpressionEngine Dev Team
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25 * @link http://codeigniter.com/user_guide/libraries/pagination.html
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27 class CI_Pagination {
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29 var $base_url = ''; // The page we are linking to
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30 var $total_rows = ''; // Total number of items (database results)
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31 var $per_page = 10; // Max number of items you want shown per page
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32 var $num_links = 2; // Number of "digit" links to show before/after the currently viewed page
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33 var $cur_page = 0; // The current page being viewed
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34 var $first_link = '‹ First';
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35 var $next_link = '>';
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36 var $prev_link = '<';
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37 var $last_link = 'Last ›';
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38 var $uri_segment = 3;
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39 var $full_tag_open = '';
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40 var $full_tag_close = '';
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41 var $first_tag_open = '';
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42 var $first_tag_close = ' ';
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43 var $last_tag_open = ' ';
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44 var $last_tag_close = '';
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45 var $cur_tag_open = ' <b>';
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46 var $cur_tag_close = '</b>';
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47 var $next_tag_open = ' ';
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48 var $next_tag_close = ' ';
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49 var $prev_tag_open = ' ';
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50 var $prev_tag_close = '';
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51 var $num_tag_open = ' ';
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52 var $num_tag_close = '';
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53 var $page_query_string = FALSE;
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54 var $query_string_segment = 'per_page';
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60 * @param array initialization parameters
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62 function CI_Pagination($params = array())
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64 if (count($params) > 0)
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66 $this->initialize($params);
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69 log_message('debug', "Pagination Class Initialized");
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72 // --------------------------------------------------------------------
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75 * Initialize Preferences
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78 * @param array initialization parameters
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81 function initialize($params = array())
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83 if (count($params) > 0)
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85 foreach ($params as $key => $val)
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87 if (isset($this->$key))
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95 // --------------------------------------------------------------------
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98 * Generate the pagination links
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103 function create_links()
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105 // If our item count or per-page total is zero there is no need to continue.
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106 if ($this->total_rows == 0 OR $this->per_page == 0)
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111 // Calculate the total number of pages
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112 $num_pages = ceil($this->total_rows / $this->per_page);
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114 // Is there only one page? Hm... nothing more to do here then.
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115 if ($num_pages == 1)
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120 // Determine the current page number.
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121 $CI =& get_instance();
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123 if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
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125 if ($CI->input->get($this->query_string_segment) != 0)
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127 $this->cur_page = $CI->input->get($this->query_string_segment);
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129 // Prep the current page - no funny business!
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130 $this->cur_page = (int) $this->cur_page;
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135 if ($CI->uri->segment($this->uri_segment) != 0)
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137 $this->cur_page = $CI->uri->segment($this->uri_segment);
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139 // Prep the current page - no funny business!
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140 $this->cur_page = (int) $this->cur_page;
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144 $this->num_links = (int)$this->num_links;
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146 if ($this->num_links < 1)
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148 show_error('Your number of links must be a positive number.');
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151 if ( ! is_numeric($this->cur_page))
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153 $this->cur_page = 0;
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156 // Is the page number beyond the result range?
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157 // If so we show the last page
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158 if ($this->cur_page > $this->total_rows)
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160 $this->cur_page = ($num_pages - 1) * $this->per_page;
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163 $uri_page_number = $this->cur_page;
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164 $this->cur_page = floor(($this->cur_page/$this->per_page) + 1);
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166 // Calculate the start and end numbers. These determine
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167 // which number to start and end the digit links with
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168 $start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
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169 $end = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;
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171 // Is pagination being used over GET or POST? If get, add a per_page query
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172 // string. If post, add a trailing slash to the base URL if needed
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173 if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)
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175 $this->base_url = rtrim($this->base_url).'&'.$this->query_string_segment.'=';
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179 $this->base_url = rtrim($this->base_url, '/') .'/';
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182 // And here we go...
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185 // Render the "First" link
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186 if ($this->cur_page > ($this->num_links + 1))
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188 $output .= $this->first_tag_open.'<a href="'.$this->base_url.'">'.$this->first_link.'</a>'.$this->first_tag_close;
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191 // Render the "previous" link
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192 if ($this->cur_page != 1)
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194 $i = $uri_page_number - $this->per_page;
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195 if ($i == 0) $i = '';
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196 $output .= $this->prev_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;
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199 // Write the digit links
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200 for ($loop = $start -1; $loop <= $end; $loop++)
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202 $i = ($loop * $this->per_page) - $this->per_page;
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206 if ($this->cur_page == $loop)
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208 $output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page
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212 $n = ($i == 0) ? '' : $i;
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213 $output .= $this->num_tag_open.'<a href="'.$this->base_url.$n.'">'.$loop.'</a>'.$this->num_tag_close;
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218 // Render the "next" link
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219 if ($this->cur_page < $num_pages)
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221 $output .= $this->next_tag_open.'<a href="'.$this->base_url.($this->cur_page * $this->per_page).'">'.$this->next_link.'</a>'.$this->next_tag_close;
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224 // Render the "Last" link
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225 if (($this->cur_page + $this->num_links) < $num_pages)
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227 $i = (($num_pages * $this->per_page) - $this->per_page);
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228 $output .= $this->last_tag_open.'<a href="'.$this->base_url.$i.'">'.$this->last_link.'</a>'.$this->last_tag_close;
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231 // Kill double slashes. Note: Sometimes we can end up with a double slash
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232 // in the penultimate link so we'll kill all double slashes.
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233 $output = preg_replace("#([^:])//+#", "\\1/", $output);
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235 // Add the wrapper HTML if exists
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236 $output = $this->full_tag_open.$output.$this->full_tag_close;
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241 // END Pagination Class
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243 /* End of file Pagination.php */
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244 /* Location: ./system/libraries/Pagination.php */