sql_query = $query;
$this->page_name = $page_holder;
if (isset($HTTP_GET_VARS[$page_holder])) {
$page = $HTTP_GET_VARS[$page_holder];
} elseif (isset($HTTP_POST_VARS[$page_holder])) {
$page = $HTTP_POST_VARS[$page_holder];
} else {
$page = '';
}
if (empty($page) || !is_numeric($page)) $page = 1;
$this->current_page_number = $page;
$this->number_of_rows_per_page = $max_rows;
$pos_to = strlen($this->sql_query);
$pos_from = strpos($this->sql_query, ' from', 0);
$pos_group_by = strpos($this->sql_query, ' group by', $pos_from);
if (($pos_group_by < $pos_to) && ($pos_group_by != false)) $pos_to = $pos_group_by;
$pos_having = strpos($this->sql_query, ' having', $pos_from);
if (($pos_having < $pos_to) && ($pos_having != false)) $pos_to = $pos_having;
$pos_order_by = strpos($this->sql_query, ' order by', $pos_from);
if (($pos_order_by < $pos_to) && ($pos_order_by != false)) $pos_to = $pos_order_by;
if (strpos($this->sql_query, 'distinct') || strpos($this->sql_query, 'group by')) {
$count_string = 'distinct ' . tep_db_input($count_key);
} else {
$count_string = tep_db_input($count_key);
}
$count_query = tep_db_query("select count(" . $count_string . ") as total " . substr($this->sql_query, $pos_from, ($pos_to - $pos_from)));
$count = tep_db_fetch_array($count_query);
$this->number_of_rows = $count['total'];
$this->number_of_pages = ceil($this->number_of_rows / $this->number_of_rows_per_page);
if ($this->current_page_number > $this->number_of_pages) {
$this->current_page_number = $this->number_of_pages;
}
$offset = ($this->number_of_rows_per_page * ($this->current_page_number - 1));
$this->sql_query .= " limit " . $offset . ", " . $this->number_of_rows_per_page;
}
/* class functions */
// display split-page-number-links
function display_links($max_page_links, $parameters = '') {
global $PHP_SELF, $request_type;
$display_links_string = '';
$class = 'class="pageResults"';
if (tep_not_null($parameters) && (substr($parameters, -1) != '&')) $parameters .= '&';
// previous button - not displayed on first page
if ($this->current_page_number > 1) $display_links_string .= ' ';
// check if number_of_pages > $max_page_links
$cur_window_num = intval($this->current_page_number / $max_page_links);
if ($this->current_page_number % $max_page_links) $cur_window_num++;
$max_window_num = intval($this->number_of_pages / $max_page_links);
if ($this->number_of_pages % $max_page_links) $max_window_num++;
// previous window of pages
if ($cur_window_num > 1) $display_links_string .= '';
// page nn button
for ($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); $jump_to_page++) {
if ($jump_to_page == $this->current_page_number) {
$display_links_string .= ' ' . $jump_to_page . ' ';
} else {
$display_links_string .= ' ';
}
}
// next window of pages
if ($cur_window_num < $max_window_num) $display_links_string .= ' ';
// next button
if (($this->current_page_number < $this->number_of_pages) && ($this->number_of_pages != 1)) $display_links_string .= ' ';
return $display_links_string;
}
// display number of total products found
function display_count($text_output) {
$to_num = ($this->number_of_rows_per_page * $this->current_page_number);
if ($to_num > $this->number_of_rows) $to_num = $this->number_of_rows;
$from_num = ($this->number_of_rows_per_page * ($this->current_page_number - 1));
if ($to_num == 0) {
$from_num = 0;
} else {
$from_num++;
}
return sprintf($text_output, $from_num, $to_num, $this->number_of_rows);
}
}
?>