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This plugin provides two template tags for use in single.php to create a post navigation loop, whereby previous to the first post is the last post, and after the last post is first post. Basically, when you’re on the last post and you click to go to the next post, the link takes you to the first post. Likewise, if you’re on the first post and click to go to the previous post, the link takes you to the last post. The function c2c_next_or_loop_post_link() is identical to WordPress’s next_post_link() in every way except when called on the last post in the navigation sequence, in which case it links back to the first post in the navigation sequence. The function c2c_previous_or_loop_post_link() is identical to WordPress’s previous_post_link() in every way except when called on the first post in the navigation sequence, in which case it links back to the last post in the navigation sequence. Useful for providing a looping link of posts, such as for a portfolio, or to continually present pertinent posts for visitors to continue reading. If you are interested in getting the post itself and not just a link to the post, you can use the c2c_get_next_or_loop_post() and c2c_get_previous_or_loop_post() functions. Links: Plugin Homepage | Plugin Directory Page | Author Homepage Template Tags The plugin provides four template tags for use in your single-post theme templates. Functions function c2c_next_or_loop_post_link( $format='%link »', $link='%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) Like WordPress’s next_post_link(), this function displays a link to the next chronological post (among all published posts, those in the same category, or those not in certain categories). Unlink next_post_link(), when on the last post in the sequence this function will link back to the first post in the sequence, creating a circular loop. function c2c_get_next_or_loop_post_link( $format='%link »', $link='%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) Like `c2c_next_or_loop_post_link(), but returns the value without echoing it. function c2c_previous_or_loop_post_link( $format='« %link', $link='%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) Like WordPress’s previous_post_link(), this function displays a link to the previous chronological post (among all published posts, those in the same category, or those not in certain categories). Unlink previous_post_link(), when on the first post in the sequence this function will link to the last post in the sequence, creating a circular loop. function c2c_get_previous_or_loop_post_link( $format='« %link', $link='%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) Like `c2c_get_previous_or_loop_post_link(), but returns the value without echoing it. function c2c_get_next_or_loop_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) Like WordPress’s get_adjacent_post() when used to find the next post, except when on the last post in the sequence this function will return the first post in the sequence, creating a circular loop. function c2c_get_previous_or_loop_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) Like WordPress’s get_adjacent_post() when used to find the previous post, except when on the first post in the sequence this function will return the last post in the sequence, creating a circular loop. Arguments $format (optional) A percent-substitution string indicating the format of the entire output string. Use %link to represent the next/previous post being linked, or %title to represent the title of the next/previous post. $link (optional) A percent-substitution string indicating the format of the link itself that gets created for the next/previous post. Use %link to represent the next/previous post being linked, or %title to represent the title of the next/previous post. $in_same_term (optional) A boolean value (either true or false) indicating if the next/previous post should be in the current post’s same taxonomy term. $excluded_terms (optional) An array or comma-separated string of category or term IDs to which posts cannot belong. $taxonomy (optional) Taxonomy, if $in_same_term is true. Default ‘category’. Examples <div class="loop-navigation"> <div class="alignleft"><?php c2c_previous_or_loop_post_link(); ?></div> <div class="alignright"><?php c2c_next_or_loop_post_link(); ?></div> </div><h3>Filters</h3> The plugin is further customizable via eleven hooks. Typically, this type of customization would be put into your active theme’s functions.php file or used by another plugin. c2c_previous_or_loop_post_link_output, c2c_next_or_loop_post_link_output (filters) The ‘c2c_previous_or_loop_post_link_output’ and ‘c2c_next_or_loop_post_link_output’ filters allow you to customize the link markup generated for previous and next looping links, respectively. Example: <?php // Prepend "Prev:" to previous link markup. function my_custom_previous_or_loop_link_output( $output, $format, $link, $post, $in_same_term, $excluded_terms, $taxonomy ) { return 'Prev: ' . $output; } add_filter( 'c2c_previous_or_loop_post_link_output', 'my_custom_previous_or_loop_link_output', 10, 4 ); ?> c2c_previous_or_loop_post_link_get, c2c_next_or_loop_post_link_get (filters) The ‘c2c_previous_or_loop_post_link_get’ and ‘c2c_next_or_loop_post_link_get’ filters allow you to customize the link markups generated for previous and next looping links, respectively, but in the non-echoing functions. c2c_previous_or_loop_post_link, c2c_next_or_loop_post_link (actions), c2c_get_previous_or_loop_post_link, c2c_get_next_or_loop_post_link, c2c_get_adjacent_or_loop_post, c2c_get_previous_or_loop_post, c2c_get_previous_or_loop_post (actions) The ‘c2c_previous_or_loop_post_link’ and ‘c2c_next_or_loop_post_link’ actions allow you to use an alternative approach to safely invoke c2c_previous_or_loop_post_link() and c2c_next_or_loop_post_link(), respectively, in such a way that if the plugin were deactivated or deleted, then your calls to the functions won’t cause errors in your site. The ‘c2c_get_previous_or_loop_post_link’ and ‘c2c_get_next_or_loop_post_link’ filters do the same for the non-echoing c2c_previous_or_loop_post_link() and c2c_next_or_loop_post_link(). Arguments: Same as for for c2c_previous_or_loop_post_link() and c2c_next_or_loop_post_link() Example: Instead of: <?php echo c2c_previous_or_loop_post_link( '<span class="prev-or-loop-link">« %link</span>' ); ?> Do: <?php echo do_action( 'c2c_previous_or_loop_post_link', '<span class="prev-or-loop-link">« %link</span>' ); ?>