130 lines
5.7 KiB
PHP
130 lines
5.7 KiB
PHP
<?php
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/*
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$Id: split_page_results.php,v 1.15 2003/06/09 22:35:34 hpdl Exp $
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osCommerce, Open Source E-Commerce Solutions
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http://www.oscommerce.com
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Copyright (c) 2003 osCommerce
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Released under the GNU General Public License
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*/
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class splitPageResults {
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var $sql_query, $number_of_rows, $current_page_number, $number_of_pages, $number_of_rows_per_page, $page_name;
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/* class constructor */
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function splitPageResults($query, $max_rows, $count_key = '*', $page_holder = 'page') {
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global $HTTP_GET_VARS, $HTTP_POST_VARS;
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$this->sql_query = $query;
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$this->page_name = $page_holder;
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if (isset($HTTP_GET_VARS[$page_holder])) {
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$page = $HTTP_GET_VARS[$page_holder];
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} elseif (isset($HTTP_POST_VARS[$page_holder])) {
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$page = $HTTP_POST_VARS[$page_holder];
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} else {
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$page = '';
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}
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if (empty($page) || !is_numeric($page)) $page = 1;
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$this->current_page_number = $page;
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$this->number_of_rows_per_page = $max_rows;
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$pos_to = strlen($this->sql_query);
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$pos_from = strpos($this->sql_query, ' from', 0);
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$pos_group_by = strpos($this->sql_query, ' group by', $pos_from);
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if (($pos_group_by < $pos_to) && ($pos_group_by != false)) $pos_to = $pos_group_by;
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$pos_having = strpos($this->sql_query, ' having', $pos_from);
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if (($pos_having < $pos_to) && ($pos_having != false)) $pos_to = $pos_having;
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$pos_order_by = strpos($this->sql_query, ' order by', $pos_from);
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if (($pos_order_by < $pos_to) && ($pos_order_by != false)) $pos_to = $pos_order_by;
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if (strpos($this->sql_query, 'distinct') || strpos($this->sql_query, 'group by')) {
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$count_string = 'distinct ' . tep_db_input($count_key);
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} else {
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$count_string = tep_db_input($count_key);
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}
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$count_query = tep_db_query("select count(" . $count_string . ") as total " . substr($this->sql_query, $pos_from, ($pos_to - $pos_from)));
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$count = tep_db_fetch_array($count_query);
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$this->number_of_rows = $count['total'];
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$this->number_of_pages = ceil($this->number_of_rows / $this->number_of_rows_per_page);
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if ($this->current_page_number > $this->number_of_pages) {
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$this->current_page_number = $this->number_of_pages;
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}
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$offset = ($this->number_of_rows_per_page * ($this->current_page_number - 1));
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$this->sql_query .= " limit " . max($offset, 0) . ", " . $this->number_of_rows_per_page;
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}
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/* class functions */
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// display split-page-number-links
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function display_links($max_page_links, $parameters = '') {
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global $PHP_SELF, $request_type;
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$display_links_string = '';
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$class = 'class="pageResults"';
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if (tep_not_null($parameters) && (substr($parameters, -1) != '&')) $parameters .= '&';
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// previous button - not displayed on first page
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if ($this->current_page_number > 1) $display_links_string .= '<a href="' . tep_href_link(basename($PHP_SELF), $parameters . $this->page_name . '=' . ($this->current_page_number - 1), $request_type) . '" class="pageResults" title=" ' . PREVNEXT_TITLE_PREVIOUS_PAGE . ' "><u>' . PREVNEXT_BUTTON_PREV . '</u></a> ';
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// check if number_of_pages > $max_page_links
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$cur_window_num = intval($this->current_page_number / $max_page_links);
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if ($this->current_page_number % $max_page_links) $cur_window_num++;
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$max_window_num = intval($this->number_of_pages / $max_page_links);
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if ($this->number_of_pages % $max_page_links) $max_window_num++;
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// previous window of pages
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if ($cur_window_num > 1) $display_links_string .= '<a href="' . tep_href_link(basename($PHP_SELF), $parameters . $this->page_name . '=' . (($cur_window_num - 1) * $max_page_links), $request_type) . '" class="pageResults" title=" ' . sprintf(PREVNEXT_TITLE_PREV_SET_OF_NO_PAGE, $max_page_links) . ' ">...</a>';
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// page nn button
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for ($jump_to_page = 1 + (($cur_window_num - 1) * $max_page_links); ($jump_to_page <= ($cur_window_num * $max_page_links)) && ($jump_to_page <= $this->number_of_pages); $jump_to_page++) {
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if ($jump_to_page == $this->current_page_number) {
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$display_links_string .= ' <b>' . $jump_to_page . '</b> ';
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} else {
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$display_links_string .= ' <a href="' . tep_href_link(basename($PHP_SELF), $parameters . $this->page_name . '=' . $jump_to_page, $request_type) . '" class="pageResults" title=" ' . sprintf(PREVNEXT_TITLE_PAGE_NO, $jump_to_page) . ' "><u>' . $jump_to_page . '</u></a> ';
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}
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}
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// next window of pages
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if ($cur_window_num < $max_window_num) $display_links_string .= '<a href="' . tep_href_link(basename($PHP_SELF), $parameters . $this->page_name . '=' . (($cur_window_num) * $max_page_links + 1), $request_type) . '" class="pageResults" title=" ' . sprintf(PREVNEXT_TITLE_NEXT_SET_OF_NO_PAGE, $max_page_links) . ' ">...</a> ';
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// next button
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if (($this->current_page_number < $this->number_of_pages) && ($this->number_of_pages != 1)) $display_links_string .= ' <a href="' . tep_href_link(basename($PHP_SELF), $parameters . 'page=' . ($this->current_page_number + 1), $request_type) . '" class="pageResults" title=" ' . PREVNEXT_TITLE_NEXT_PAGE . ' "><u>' . PREVNEXT_BUTTON_NEXT . '</u></a> ';
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return $display_links_string;
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}
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// display number of total products found
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function display_count($text_output) {
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$to_num = ($this->number_of_rows_per_page * $this->current_page_number);
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if ($to_num > $this->number_of_rows) $to_num = $this->number_of_rows;
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$from_num = ($this->number_of_rows_per_page * ($this->current_page_number - 1));
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if ($to_num == 0) {
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$from_num = 0;
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} else {
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$from_num++;
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}
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return sprintf($text_output, $from_num, $to_num, $this->number_of_rows);
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}
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}
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?>
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