File: /var/www/html/triad-infosec/wp-content/themes/Avada/includes/plugins/post-link-plus.php
<?php
// Do not allow directly accessing this file.
if ( ! defined( 'ABSPATH' ) ) {
exit( 'Direct script access denied.' );
}
/**
* Retrieve adjacent post link.
*
* Can either be next or previous post link.
*
* Based on get_adjacent_post() from wp-includes/link-template.php
*
* @param array $r Arguments.
* @param bool $previous Optional. Whether to retrieve previous post.
* @return array of post objects.
*/
function fusion_get_adjacent_post_plus( $r, $previous = true ) {
global $post, $wpdb;
extract( $r, EXTR_SKIP );
if ( empty( $post ) ) {
return null;
}
// Sanitize $order_by, since we are going to use it in the SQL query.
// Default to 'post_date'.
switch ( $order_by ) {
case 'post_date':
case 'post_title':
case 'post_excerpt':
case 'post_name':
case 'post_modified':
$order_format = '%s';
break;
case 'ID':
case 'post_author':
case 'post_parent':
case 'menu_order':
case 'comment_count':
$order_format = '%d';
break;
case ( 'custom' == $order_by && ! empty( $meta_key ) ):
// Don't allow a custom sort if meta_key is empty.
$order_format = '%s';
break;
case ( 'numeric' == $order_by && ! empty( $meta_key ) ):
$order_format = '%d';
break;
default:
$order_by = 'post_date';
$order_format = '%s';
}
// Sanitize $order_2nd.
// Only columns containing unique values are allowed here.
// Default to 'post_date'.
switch ( $order_2nd ) {
case 'post_date':
case 'post_title':
case 'post_modified':
$order_format2 = '%s';
break;
case 'ID':
$order_format2 = '%d';
break;
default:
$order_2nd = 'post_date';
$order_format2 = '%s';
}
// Sanitize num_results (non-integer or negative values trigger SQL errors).
$num_results = ( intval( $num_results ) < 2 ) ? 1 : intval( $num_results );
$current_post = $post->$order_by;
$order_by = 'p.' . $order_by;
$meta_join = '';
// Queries involving custom fields require an extra table join.
if ( in_array( $order_by, array( 'custom', 'numeric' ) ) ) {
$current_post = get_post_meta( $post->ID, $meta_key, true );
$order_by = ( 'numeric' === $order_by ) ? 'm.meta_value+0' : 'm.meta_value';
$meta_join = $wpdb->prepare( " INNER JOIN $wpdb->postmeta AS m ON p.ID = m.post_id AND m.meta_key = %s", $meta_key );
} elseif ( $in_same_meta ) {
$current_post = $post->$order_by;
$order_by = 'p.' . $order_by;
$meta_join = $wpdb->prepare( " INNER JOIN $wpdb->postmeta AS m ON p.ID = m.post_id AND m.meta_key = %s", $in_same_meta );
}
// Get the current post value for the second sort column.
$current_post2 = $post->$order_2nd;
$order_2nd = 'p.' . $order_2nd;
// Get the list of post types. Default to current post type.
if ( empty( $post_type ) ) {
$post_type = "'$post->post_type'";
}
// Put this section in a do-while loop to enable the loop-to-first-post option.
do {
$join = $meta_join;
$excluded_categories = $ex_cats;
$included_categories = $in_cats;
$excluded_posts = $ex_posts;
$included_posts = $in_posts;
$in_same_term_sql = $in_same_author_sql = $in_same_meta_sql = $ex_cats_sql = $in_cats_sql = $ex_posts_sql = $in_posts_sql = '';
// Get the list of hierarchical taxonomies, including customs (don't assume taxonomy = 'category').
$taxonomies = array_filter( get_post_taxonomies( $post->ID ), 'is_taxonomy_hierarchical' );
if ( ( $in_same_cat || $in_same_tax || $in_same_format || ! empty( $excluded_categories ) || ! empty( $included_categories ) ) && ! empty( $taxonomies ) ) {
$cat_array = $tax_array = $format_array = array();
if ( $in_same_cat ) {
$cat_array = wp_get_object_terms( $post->ID, $taxonomies, array( 'fields' => 'ids' ) );
}
if ( $in_same_tax && ! $in_same_cat ) {
if ( true === $in_same_tax ) {
if ( array( 'category' ) != $taxonomies ) {
$taxonomies = array_diff( $taxonomies, array( 'category' ) );
}
} else {
$taxonomies = (array) $in_same_tax;
}
$tax_array = wp_get_object_terms( $post->ID, $taxonomies, array( 'fields' => 'ids' ) );
}
if ( $in_same_format ) {
$taxonomies[] = 'post_format';
$format_array = wp_get_object_terms( $post->ID, 'post_format', array( 'fields' => 'ids' ) );
}
$join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id AND tt.taxonomy IN (\"" . implode( '", "', $taxonomies ) . '")';
$term_array = array_unique( array_merge( $cat_array, $tax_array, $format_array ) );
if ( ! empty( $term_array ) ) {
$in_same_term_sql = 'AND tt.term_id IN (' . implode( ',', $term_array ) . ')';
}
if ( ! empty( $excluded_categories ) ) {
// Support for both (1 and 5 and 15) and (1, 5, 15) delimiter styles.
$delimiter = ( strpos( $excluded_categories, ',' ) !== false ) ? ',' : 'and';
$excluded_categories = array_map( 'intval', explode( $delimiter, $excluded_categories ) );
// Three category exclusion methods are supported: 'strong', 'diff', and 'weak'.
// Default is 'weak'. See the plugin documentation for more information.
if ( 'strong' === $ex_cats_method ) {
$taxonomies = array_filter( get_post_taxonomies( $post->ID ), 'is_taxonomy_hierarchical' );
if ( function_exists( 'get_post_format' ) ) {
$taxonomies[] = 'post_format';
}
$ex_cats_posts = get_objects_in_term( $excluded_categories, $taxonomies );
if ( ! empty( $ex_cats_posts ) ) {
$ex_cats_sql = 'AND p.ID NOT IN (' . implode( $ex_cats_posts, ',' ) . ')';
}
} else {
if ( ! empty( $term_array ) && ! in_array( $ex_cats_method, array( 'diff', 'differential' ) ) ) {
$excluded_categories = array_diff( $excluded_categories, $term_array );
}
if ( ! empty( $excluded_categories ) ) {
$ex_cats_sql = 'AND tt.term_id NOT IN (' . implode( $excluded_categories, ',' ) . ')';
}
}
}
if ( ! empty( $included_categories ) ) {
$in_same_term_sql = ''; // In_cats overrides in_same_cat.
$delimiter = ( false !== strpos( $included_categories, ',' ) ) ? ',' : 'and';
$included_categories = array_map( 'intval', explode( $delimiter, $included_categories ) );
$in_cats_sql = 'AND tt.term_id IN (' . implode( ',', $included_categories ) . ')';
}
}
// Optionally restrict next/previous links to same author.
if ( $in_same_author ) {
$in_same_author_sql = $wpdb->prepare( 'AND p.post_author = %d', $post->post_author );
}
// Optionally restrict next/previous links to same meta value.
if ( $in_same_meta && 'custom' != $r['order_by'] && 'numeric' != $r['order_by'] ) {
$in_same_meta_sql = $wpdb->prepare( 'AND m.meta_value = %s', get_post_meta( $post->ID, $in_same_meta, true ) );
}
// Optionally exclude individual post IDs.
if ( ! empty( $excluded_posts ) ) {
$excluded_posts = array_map( 'intval', explode( ',', $excluded_posts ) );
$ex_posts_sql = ' AND p.ID NOT IN (' . implode( ',', $excluded_posts ) . ')';
}
// Optionally include individual post IDs.
if ( ! empty( $included_posts ) ) {
$included_posts = array_map( 'intval', explode( ',', $included_posts ) );
$in_posts_sql = ' AND p.ID IN (' . implode( ',', $included_posts ) . ')';
}
$adjacent = $previous ? 'previous' : 'next';
$order = $previous ? 'DESC' : 'ASC';
$op = $previous ? '<' : '>';
// Optionally get the first/last post. Disable looping and return only one result.
if ( $end_post ) {
$order = $previous ? 'ASC' : 'DESC';
$num_results = 1;
$loop = false;
// Display the end post link even when it is the current post.
if ( 'fixed' === $end_post ) {
$op = $previous ? '<=' : '>=';
}
}
// If there is no next/previous post, loop back around to the first/last post.
if ( $loop && isset( $result ) ) {
$op = $previous ? '>=' : '<=';
// Prevent an infinite loop if no first/last post is found.
$loop = false;
}
$join = apply_filters( "get_{$adjacent}_post_plus_join", $join, $r );
// In case the value in the $order_by column is not unique, select posts based on the $order_2nd column as well.
// This prevents posts from being skipped when they have, for example, the same menu_order.
$where = apply_filters( "get_{$adjacent}_post_plus_where", $wpdb->prepare( "WHERE ( $order_by $op $order_format OR $order_2nd $op $order_format2 AND $order_by = $order_format ) AND p.post_type IN ($post_type) AND p.post_status = 'publish' $in_same_term_sql $in_same_author_sql $in_same_meta_sql $ex_cats_sql $in_cats_sql $ex_posts_sql $in_posts_sql", $current_post, $current_post2, $current_post ), $r );
$sort = apply_filters( "get_{$adjacent}_post_plus_sort", "ORDER BY $order_by $order, $order_2nd $order LIMIT $num_results", $r );
$query = "SELECT DISTINCT p.* FROM $wpdb->posts AS p $join $where $sort";
$query_key = 'adjacent_post_' . md5( $query );
$result = wp_cache_get( $query_key );
if ( false !== $result ) {
return $result;
}
// Use get_results instead of get_row, in order to retrieve multiple adjacent posts (when $num_results > 1)
// Add DISTINCT keyword to prevent posts in multiple categories from appearing more than once.
$result = $wpdb->get_results( "SELECT DISTINCT p.* FROM $wpdb->posts AS p $join $where $sort" );
$result = ( null === $result ) ? '' : $result;
} while ( ! $result && $loop );
wp_cache_set( $query_key, $result );
return $result;
}
/**
* Display previous post link that is adjacent to the current post.
*
* Based on previous_post_link() from wp-includes/link-template.php
*
* @param array|string $args Optional. Override default arguments.
* @return bool True if previous post link is found, otherwise false.
*/
function fusion_previous_post_link_plus( $args = '' ) {
return fusion_adjacent_post_link_plus( $args, '« %link', true );
}
/**
* Display next post link that is adjacent to the current post.
*
* Based on next_post_link() from wp-includes/link-template.php
*
* @param array|string $args Optional. Override default arguments.
* @return bool True if next post link is found, otherwise false.
*/
function fusion_next_post_link_plus( $args = '' ) {
return fusion_adjacent_post_link_plus( $args, '%link »', false );
}
/**
* Display adjacent post link.
*
* Can be either next post link or previous.
*
* Based on adjacent_post_link() from wp-includes/link-template.php
*
* @param array|string $args Optional. Override default arguments.
* @param string $format The format to use.
* @param bool $previous Optional, default is true. Whether display link to previous post.
* @return bool True if next/previous post is found, otherwise false.
*/
function fusion_adjacent_post_link_plus( $args = '', $format = '%link »', $previous = true ) {
$defaults = array(
'order_by' => 'post_date',
'order_2nd' => 'post_date',
'meta_key' => '',
'post_type' => '',
'loop' => false,
'end_post' => false,
'thumb' => false,
'max_length' => 0,
'format' => '',
'link' => '%title',
'date_format' => '',
'tooltip' => '%title',
'in_same_cat' => false,
'in_same_tax' => false,
'in_same_format' => false,
'in_same_author' => false,
'in_same_meta' => false,
'ex_cats' => '',
'ex_cats_method' => 'weak',
'in_cats' => '',
'ex_posts' => '',
'in_posts' => '',
'before' => '',
'after' => '',
'num_results' => 1,
'return' => false,
'echo' => true,
);
// If Post Types Order plugin is installed,
// default to sorting on menu_order.
if ( function_exists( 'initCPTO' ) ) {
$defaults['order_by'] = 'menu_order';
$previous = ( $previous ) ? false : true;
}
$r = wp_parse_args( $args, $defaults );
if ( empty( $r['format'] ) ) {
$r['format'] = $format;
}
if ( empty( $r['date_format'] ) ) {
$r['date_format'] = get_option( 'date_format' );
}
if ( ! function_exists( 'get_post_format' ) ) {
$r['in_same_format'] = false;
}
$posts = fusion_get_adjacent_post_plus( $r, $previous );
if ( $previous && is_attachment() ) {
$posts = array();
$posts[] = & get_post( $GLOBALS['post']->post_parent );
}
// If there is no next/previous post,
// return false so themes may conditionally display inactive link text.
if ( empty( $posts ) ) {
return false;
}
// If sorting by date, display posts in reverse chronological order.
// Otherwise display in alpha/numeric order.
if ( ( $previous && 'post_date' != $r['order_by'] ) || ( ! $previous && 'post_date' == $r['order_by'] ) ) {
$posts = array_reverse( $posts, true );
}
// Option to return something other than the formatted link.
if ( $r['return'] ) {
if ( 1 == $r['num_results'] ) {
reset( $posts );
$post = current( $posts );
switch ( $r['return'] ) {
case 'id':
return $post->ID;
case 'href':
return get_permalink( $post );
case 'object':
return $post;
case 'title':
return $post->post_title;
case 'date':
return mysql2date( $r['date_format'], $post->post_date );
}
} elseif ( 'object' == $r['return'] ) {
return $posts;
}
}
$output = $r['before'];
// When num_results > 1, multiple adjacent posts may be returned.
// Use foreach to display each adjacent post.
foreach ( $posts as $post ) {
$title = $post->post_title;
if ( empty( $post->post_title ) ) {
$title = $previous ? esc_attr__( 'Previous Post', 'Avada' ) : esc_attr__( 'Next Post', 'Avada' );
}
$title = apply_filters( 'the_title', $title, $post->ID );
$date = mysql2date( $r['date_format'], $post->post_date );
$author = get_the_author_meta( 'display_name', $post->post_author );
// Set anchor title attribute to long post title or custom tooltip text.
// Supports variable replacement in custom tooltip.
$tooltip = '';
if ( $r['tooltip'] ) {
$tooltip = str_replace( '%title', $title, $r['tooltip'] );
$tooltip = str_replace( '%date', $date, $tooltip );
$tooltip = str_replace( '%author', $author, $tooltip );
$tooltip = ' title="' . esc_attr( $tooltip ) . '"';
}
// Truncate the link title to nearest whole word under the length specified.
$max_length = ( 1 > intval( $r['max_length'] ) ) ? 9999 : intval( $r['max_length'] );
if ( $max_length < strlen( $title ) ) {
$title = substr( $title, 0, strrpos( substr( $title, 0, $max_length ), ' ' ) );
// Mod for LTR languages.
$title = sprintf( '%s...', $title );
}
$rel = ( $previous ) ? 'prev' : 'next';
$anchor = '<a href="' . get_permalink( $post ) . '" rel="' . $rel . '"' . $tooltip . '>';
$link = str_replace( '%title', $title, $r['link'] );
$link = str_replace( '%date', $date, $link );
$link = $anchor . $link . '</a>';
$format = str_replace( '%link', $link, $r['format'] );
$format = str_replace( '%title', $title, $format );
$format = str_replace( '%date', $date, $format );
$format = str_replace( '%author', $author, $format );
if ( ( 'custom' == $r['order_by'] || 'numeric' == $r['order_by'] ) && ! empty( $r['meta_key'] ) ) {
$meta = get_post_meta( $post->ID, $r['meta_key'], true );
$format = str_replace( '%meta', $meta, $format );
} elseif ( $r['in_same_meta'] ) {
$meta = get_post_meta( $post->ID, $r['in_same_meta'], true );
$format = str_replace( '%meta', $meta, $format );
}
// Get the category list, including custom taxonomies
// (only if the %category variable has been used).
if ( ( false !== strpos( $format, '%category' ) ) ) {
$term_list = '';
$taxonomies = array_filter( get_post_taxonomies( $post->ID ), 'is_taxonomy_hierarchical' );
if ( $r['in_same_format'] && get_post_format( $post->ID ) ) {
$taxonomies[] = 'post_format';
}
foreach ( $taxonomies as &$taxonomy ) {
// No, this is not a mistake. Yes, we are testing the result of the assignment ( = ).
// We are doing it this way to stop it from appending a comma when there is no next term.
if ( $next_term = get_the_term_list( $post->ID, $taxonomy, '', ', ', '' ) ) {
$term_list .= $next_term;
if ( current( $taxonomies ) ) {
$term_list .= ', ';
}
}
}
$format = str_replace( '%category', $term_list, $format );
}
// Optionally add the post thumbnail to the link.
// Wrap the link in a span to aid CSS styling.
if ( $r['thumb'] && has_post_thumbnail( $post->ID ) ) {
if ( true === $r['thumb'] ) {
// Use 'post-thumbnail' as the default size.
$r['thumb'] = 'post-thumbnail';
}
$thumbnail = '<a class="post-thumbnail" href="' . get_permalink( $post ) . '" rel="' . $rel . '"' . $tooltip . '>' . get_the_post_thumbnail( $post->ID, $r['thumb'] ) . '</a>';
$format = $thumbnail . '<span class="post-link">' . $format . '</span>';
}
// If more than one link is returned, wrap them in <li> tags.
if ( 1 < intval( $r['num_results'] ) ) {
$format = '<li>' . $format . '</li>';
}
$output .= $format;
}
$output .= $r['after'];
// If echo is false, don't display anything. Return the link as a PHP string.
if ( ! $r['echo'] || 'output' === $r['return'] ) {
return $output;
}
$adjacent = $previous ? 'previous' : 'next';
echo apply_filters( "{$adjacent}_post_link_plus", $output, $r );
return true;
}
/* Omit closing PHP tag to avoid "Headers already sent" issues. */