162 lines
8.5 KiB
PHP
162 lines
8.5 KiB
PHP
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<?php
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/*******************************************************************
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* @Author: Boutros AbiChedid
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* @Date: March 20, 2011
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* @Websites: http://bacsoftwareconsulting.com/
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* http://blueoliveonline.com/
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* @Description: Numbered Page Navigation (Pagination) Code.
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* @Tested: Up to WordPress version 3.1.2 (also works on WP 3.3.1)
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********************************************************************/
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/* Function that Rounds To The Nearest Value.
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Needed for the pagenavi() function */
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function round_num($num, $to_nearest) {
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/*Round fractions down (http://php.net/manual/en/function.floor.php)*/
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return floor($num/$to_nearest)*$to_nearest;
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}
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/* Function that performs a Boxed Style Numbered Pagination (also called Page Navigation).
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Function is largely based on Version 2.4 of the WP-PageNavi plugin */
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function pagenavi($before = '', $after = '') {
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global $wpdb, $wp_query;
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$pagenavi_options = array();
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$pagenavi_options['pages_text'] = ('Page %CURRENT_PAGE% of %TOTAL_PAGES%:');
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$pagenavi_options['current_text'] = '%PAGE_NUMBER%';
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$pagenavi_options['page_text'] = '%PAGE_NUMBER%';
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$pagenavi_options['first_text'] = ('First Page');
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$pagenavi_options['last_text'] = ('Last Page');
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$pagenavi_options['next_text'] = 'Next »';
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$pagenavi_options['prev_text'] = '« Previous';
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$pagenavi_options['dotright_text'] = '...';
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$pagenavi_options['dotleft_text'] = '...';
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$pagenavi_options['num_pages'] = 5; //continuous block of page numbers
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$pagenavi_options['always_show'] = 0;
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$pagenavi_options['num_larger_page_numbers'] = 0;
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$pagenavi_options['larger_page_numbers_multiple'] = 5;
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//If NOT a single Post is being displayed
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/*http://codex.wordpress.org/Function_Reference/is_single)*/
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if (!is_single()) {
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$request = $wp_query->request;
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//intval — Get the integer value of a variable
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/*http://php.net/manual/en/function.intval.php*/
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$posts_per_page = intval(get_query_var('posts_per_page'));
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//Retrieve variable in the WP_Query class.
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/*http://codex.wordpress.org/Function_Reference/get_query_var*/
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$paged = intval(get_query_var('paged'));
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$numposts = $wp_query->found_posts;
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$max_page = $wp_query->max_num_pages;
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//empty — Determine whether a variable is empty
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/*http://php.net/manual/en/function.empty.php*/
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if(empty($paged) || $paged == 0) {
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$paged = 1;
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}
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$pages_to_show = intval($pagenavi_options['num_pages']);
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$larger_page_to_show = intval($pagenavi_options['num_larger_page_numbers']);
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$larger_page_multiple = intval($pagenavi_options['larger_page_numbers_multiple']);
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$pages_to_show_minus_1 = $pages_to_show - 1;
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$half_page_start = floor($pages_to_show_minus_1/2);
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//ceil — Round fractions up (http://us2.php.net/manual/en/function.ceil.php)
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$half_page_end = ceil($pages_to_show_minus_1/2);
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$start_page = $paged - $half_page_start;
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if($start_page <= 0) {
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$start_page = 1;
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}
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$end_page = $paged + $half_page_end;
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if(($end_page - $start_page) != $pages_to_show_minus_1) {
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$end_page = $start_page + $pages_to_show_minus_1;
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}
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if($end_page > $max_page) {
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$start_page = $max_page - $pages_to_show_minus_1;
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$end_page = $max_page;
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}
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if($start_page <= 0) {
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$start_page = 1;
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}
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$larger_per_page = $larger_page_to_show*$larger_page_multiple;
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//round_num() custom function - Rounds To The Nearest Value.
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$larger_start_page_start = (round_num($start_page, 10) + $larger_page_multiple) - $larger_per_page;
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$larger_start_page_end = round_num($start_page, 10) + $larger_page_multiple;
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$larger_end_page_start = round_num($end_page, 10) + $larger_page_multiple;
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$larger_end_page_end = round_num($end_page, 10) + ($larger_per_page);
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if($larger_start_page_end - $larger_page_multiple == $start_page) {
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$larger_start_page_start = $larger_start_page_start - $larger_page_multiple;
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$larger_start_page_end = $larger_start_page_end - $larger_page_multiple;
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}
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if($larger_start_page_start <= 0) {
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$larger_start_page_start = $larger_page_multiple;
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}
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if($larger_start_page_end > $max_page) {
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$larger_start_page_end = $max_page;
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}
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if($larger_end_page_end > $max_page) {
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$larger_end_page_end = $max_page;
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}
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if($max_page > 1 || intval($pagenavi_options['always_show']) == 1) {
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/*http://php.net/manual/en/function.str-replace.php */
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/*number_format_i18n(): Converts integer number to format based on locale (wp-includes/functions.php*/
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$pages_text = str_replace("%CURRENT_PAGE%", number_format_i18n($paged), $pagenavi_options['pages_text']);
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$pages_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pages_text);
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echo $before.'<div class="pagenavi">'."\n";
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if(!empty($pages_text)) {
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echo '<span class="pages">'.$pages_text.'</span>';
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}
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//Displays a link to the previous post which exists in chronological order from the current post.
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/*http://codex.wordpress.org/Function_Reference/previous_post_link*/
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previous_posts_link($pagenavi_options['prev_text']);
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if ($start_page >= 2 && $pages_to_show < $max_page) {
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$first_page_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pagenavi_options['first_text']);
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//esc_url(): Encodes < > & " ' (less than, greater than, ampersand, double quote, single quote).
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/*http://codex.wordpress.org/Data_Validation*/
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//get_pagenum_link():(wp-includes/link-template.php)-Retrieve get links for page numbers.
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echo '<a href="'.esc_url(get_pagenum_link()).'" class="first" title="'.$first_page_text.'">1</a>';
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if(!empty($pagenavi_options['dotleft_text'])) {
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echo '<span class="expand">'.$pagenavi_options['dotleft_text'].'</span>';
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}
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}
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if($larger_page_to_show > 0 && $larger_start_page_start > 0 && $larger_start_page_end <= $max_page) {
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for($i = $larger_start_page_start; $i < $larger_start_page_end; $i+=$larger_page_multiple) {
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$page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
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echo '<a href="'.esc_url(get_pagenum_link($i)).'" class="single_page" title="'.$page_text.'">'.$page_text.'</a>';
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}
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}
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for($i = $start_page; $i <= $end_page; $i++) {
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if($i == $paged) {
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$current_page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['current_text']);
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echo '<span class="current">'.$current_page_text.'</span>';
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} else {
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$page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
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echo '<a href="'.esc_url(get_pagenum_link($i)).'" class="single_page" title="'.$page_text.'">'.$page_text.'</a>';
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}
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}
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if ($end_page < $max_page) {
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if(!empty($pagenavi_options['dotright_text'])) {
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echo '<span class="expand">'.$pagenavi_options['dotright_text'].'</span>';
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}
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$last_page_text = str_replace("%TOTAL_PAGES%", number_format_i18n($max_page), $pagenavi_options['last_text']);
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echo '<a href="'.esc_url(get_pagenum_link($max_page)).'" class="last" title="'.$last_page_text.'">'.$max_page.'</a>';
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}
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next_posts_link($pagenavi_options['next_text'], $max_page);
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if($larger_page_to_show > 0 && $larger_end_page_start < $max_page) {
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for($i = $larger_end_page_start; $i <= $larger_end_page_end; $i+=$larger_page_multiple) {
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$page_text = str_replace("%PAGE_NUMBER%", number_format_i18n($i), $pagenavi_options['page_text']);
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echo '<a href="'.esc_url(get_pagenum_link($i)).'" class="single_page" title="'.$page_text.'">'.$page_text.'</a>';
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}
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}
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echo '</div>'.$after."\n";
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}
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}
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}
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?>
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