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contextual-related-posts.php
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<?php
/**
* Contextual Related Posts.
*
* Contextual Related Posts is the best related posts plugin for WordPress that
* allows you to display a list of related posts on your website and in your feed.
*
* @package Contextual_Related_Posts
* @author Ajay D'Souza <[email protected]>
* @license GPL-2.0+
* @link http://ajaydsouza.com
* @copyright 2009-2015 Ajay D'Souza
*
* @wordpress-plugin
* Plugin Name: Contextual Related Posts
* Plugin URI: http://ajaydsouza.com/wordpress/plugins/contextual-related-posts/
* Description: Display a set of related posts on your website or in your feed. Increase reader retention and reduce bounce rates
* Version: 2.2-beta20150815
* Author: WebberZone
* Author URI: https://webberzone.com
* Text Domain: crp
* License: GPL-2.0+
* License URI: http://www.gnu.org/licenses/gpl-2.0.txt
* Domain Path: /languages
* GitHub Plugin URI: https://github.com/ajaydsouza/contextual-related-posts/
*/
// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
die;
}
/**
* Holds the text domain.
*
* @since 1.4
*/
define( 'CRP_LOCAL_NAME', 'crp' );
/**
* Holds the filesystem directory path (with trailing slash) for CRP
*
* @since 1.2
*
* @var string
*/
$crp_path = plugin_dir_path( __FILE__ );
/**
* Holds the URL for CRP
*
* @since 1.2
*
* @var string
*/
$crp_url = plugins_url() . '/' . plugin_basename( dirname( __FILE__ ) );
/**
* Global variable holding the current settings for Contextual Related Posts
*
* @since 1.8.10
*
* @var array
*/
global $crp_settings;
$crp_settings = crp_read_options();
/**
* Initialises text domain for l10n.
*
* @since 1.9
*/
function ald_crp_lang_init() {
load_plugin_textdomain( CRP_LOCAL_NAME, false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
}
add_action( 'plugins_loaded', 'ald_crp_lang_init' );
/**
* Main function to generate the related posts output
*
* @since 1.0.1
*
* @param array $args Parameters in a query string format
* @return string HTML formatted list of related posts
*/
function ald_crp( $args = array() ) {
global $wpdb, $post, $single, $crp_settings;
$defaults = array(
'is_widget' => FALSE,
'echo' => TRUE,
);
$defaults = array_merge( $defaults, $crp_settings );
// Parse incomming $args into an array and merge it with $defaults
$args = wp_parse_args( $args, $defaults );
// Declare each item in $args as its own variable i.e. $type, $before.
extract( $args, EXTR_SKIP );
//Support caching to speed up retrieval
if ( ! empty( $cache ) ) {
$meta_key = 'crp_related_posts';
if ( $is_widget ) {
$meta_key .= '_widget';
}
if ( is_feed() ) {
$meta_key .= '_feed';
}
$output = get_post_meta( $post->ID, $meta_key, true );
if ( $output ) {
return $output;
}
}
$exclude_categories = explode( ',', $exclude_categories );
$rel_attribute = ( $link_nofollow ) ? ' rel="nofollow" ' : ' ';
$target_attribute = ( $link_new_window ) ? ' target="_blank" ' : ' ';
$link_attributes = array(
'rel_attribute' => $rel_attribute,
'target_attribute' => $target_attribute,
);
/**
* Filter the title of the Related Posts list
*
* @since 2.2.0
*
* @param array $link_attributes Array of link attributes
*/
$link_attributes = apply_filters( 'crp_link_attributes', $link_attributes );
// Convert it to a string
$link_attributes = implode( ' ', $link_attributes );
// Retrieve the list of posts
$results = get_crp_posts_id( array_merge( $args, array(
'postid' => $post->ID,
'strict_limit' => TRUE,
) ) );
$output = ( is_singular() ) ? '<div id="crp_related" class="crp_related' . ( $is_widget ? '_widget' : '' ) . '">' : '<div class="crp_related' . ( $is_widget ? '_widget' : '' ) . '">';
if ( $results ) {
$loop_counter = 0;
if ( ! $is_widget ) {
$title = str_replace( "%postname%", $post->post_title, $title ); // Replace %postname% with the title of the current post
/**
* Filter the title of the Related Posts list
*
* @since 1.9
*
* @param string $title Title/heading of the Related Posts list
*/
$output .= apply_filters( 'crp_heading_title', $title );
}
/**
* Filter the opening tag of the related posts list
*
* @since 1.9
*
* @param string $before_list Opening tag set in the Settings Page
*/
$output .= apply_filters( 'crp_before_list', $before_list );
foreach ( $results as $result ) {
/**
* Filter the post ID for each result. Allows a custom function to hook in and change the ID if needed.
*
* @since 1.9
*
* @param int $result->ID ID of the post
*/
$resultid = apply_filters( 'crp_post_id', $result->ID );
$result = get_post( $resultid ); // Let's get the Post using the ID
/**
* Filter the post ID for each result. This filtered ID is passed as a parameter to fetch categories.
*
* This is useful since you might want to fetch a different set of categories for a linked post ID,
* typically in the case of plugins that let you set mutiple languages
*
* @since 1.9
*
* @param int $result->ID ID of the post
*/
$resultid = apply_filters( 'crp_post_cat_id', $result->ID );
$categorys = get_the_category( $resultid ); //Fetch categories of the plugin
$p_in_c = false; // Variable to check if post exists in a particular category
foreach ( $categorys as $cat ) { // Loop to check if post exists in excluded category
$p_in_c = ( in_array( $cat->cat_ID, $exclude_categories ) ) ? true : false;
if ( $p_in_c ) break; // End loop if post found in category
}
if ( ! $p_in_c ) {
/**
* Filter the opening tag of each list item.
*
* @since 1.9
*
* @param string $before_list_item Tag before each list item. Can be defined in the Settings page.
* @param object $result Object of the current post result
*/
$output .= apply_filters( 'crp_before_list_item', $before_list_item, $result ); // Pass the post object to the filter
$title = crp_max_formatted_content( get_the_title( $result->ID ), $title_length ); // Get the post title and crop it if needed
/**
* Filter the title of each list item.
*
* @since 1.9
*
* @param string $title Title of the post.
* @param object $result Object of the current post result
*/
$title = apply_filters( 'crp_title', $title, $result );
if ( 'after' == $post_thumb_op ) {
$output .= '<a href="' . get_permalink( $result->ID ) . '" ' . $link_attributes . ' class="crp_title">' . $title . '</a>'; // Add title if post thumbnail is to be displayed after
}
if ( 'inline' == $post_thumb_op || 'after' == $post_thumb_op || 'thumbs_only' == $post_thumb_op ) {
$output .= '<a href="' . get_permalink( $result->ID ) . '" ' . $link_attributes . '>';
$output .= crp_get_the_post_thumbnail( array(
'postid' => $result->ID,
'thumb_height' => $thumb_height,
'thumb_width' => $thumb_width,
'thumb_meta' => $thumb_meta,
'thumb_html' => $thumb_html,
'thumb_default' => $thumb_default,
'thumb_default_show' => $thumb_default_show,
'scan_images' => $scan_images,
'class' => 'crp_thumb',
) );
$output .= '</a>';
}
if ( 'inline' == $post_thumb_op || 'text_only' == $post_thumb_op ) {
$output .= '<a href="' . get_permalink( $result->ID ) . '" ' . $link_attributes . ' class="crp_title">' . $title . '</a>'; // Add title when required by settings
}
if ( $show_author ) {
$author_info = get_userdata( $result->post_author );
$author_link = get_author_posts_url( $author_info->ID );
$author_name = ucwords( trim( stripslashes( $author_info->display_name ) ) );
/**
* Filter the author name.
*
* @since 1.9.1
*
* @param string $author_name Proper name of the post author.
* @param object $author_info WP_User object of the post author
*/
$author_name = apply_filters( 'crp_author_name', $author_name, $author_info );
$crp_author = '<span class="crp_author"> ' . __( ' by ', CRP_LOCAL_NAME ).'<a href="' . $author_link . '">' . $author_name . '</a></span> ';
/**
* Filter the text with the author details.
*
* @since 2.0.0
*
* @param string $crp_author Formatted string with author details and link
* @param object $author_info WP_User object of the post author
*/
$crp_author = apply_filters( 'crp_author', $crp_author, $author_info);
$output .= $crp_author;
}
if ( $show_date ) {
$output .= '<span class="crp_date"> ' . mysql2date( get_option( 'date_format', 'd/m/y' ), $result->post_date ) . '</span> ';
}
if ( $show_excerpt ) {
$output .= '<span class="crp_excerpt"> ' . crp_excerpt( $result->ID, $excerpt_length ) . '</span>';
}
$loop_counter++;
/**
* Filter the closing tag of each list item.
*
* @since 1.9
*
* @param string $after_list_item Tag after each list item. Can be defined in the Settings page.
* @param object $result Object of the current post result
*/
$output .= apply_filters( 'crp_after_list_item', $after_list_item, $result );
}
if ( $loop_counter == $limit ) break; // End loop when related posts limit is reached
} //end of foreach loop
if ( $show_credit ) {
/** This filter is documented in contextual-related-posts.php */
$output .= apply_filters( 'crp_before_list_item', $before_list_item, $result ); // Pass the post object to the filter
$output .= sprintf( __( 'Powered by <a href="%s" rel="nofollow">Contextual Related Posts</a>', CRP_LOCAL_NAME ), esc_url( 'http://ajaydsouza.com/wordpress/plugins/contextual-related-posts/' ) );
/** This filter is documented in contextual-related-posts.php */
$output .= apply_filters( 'crp_after_list_item', $after_list_item, $result );
}
/**
* Filter the closing tag of the related posts list
*
* @since 1.9
*
* @param string $after_list Closing tag set in the Settings Page
*/
$output .= apply_filters( 'crp_after_list', $after_list );
$clearfix = '<div class="crp_clear"></div>';
/**
* Filter the clearfix div tag. This is included after the closing tag to clear any miscellaneous floating elements;
*
* @since 2.0.0
*
* @param string $clearfix Contains: <div style="clear:both"></div>
*/
$output .= apply_filters( 'crp_clearfix', $clearfix );
} else {
$output .= ( $blank_output ) ? ' ' : '<p>' . $blank_output_text . '</p>';
}
if ( false === ( strpos( $output, $before_list_item ) ) ) {
$output = '<div id="crp_related">';
$output .= ($blank_output) ? ' ' : '<p>' . $blank_output_text . '</p>';
}
$output .= '</div>'; // closing div of 'crp_related'
//Support caching to speed up retrieval
if ( ! empty( $cache ) ) {
update_post_meta( $post->ID, $meta_key, $output, '' );
}
/**
* Filter the output
*
* @since 1.9.1
*
* @param string $output Formatted list of related posts
* @param array $args Complete set of arguments
*/
return apply_filters( 'ald_crp', $output, $args );
}
/**
* Fetch related posts IDs.
*
* @since 1.9
*
* @param array $args
* @return object $results
*/
function get_crp_posts_id( $args = array() ) {
global $wpdb, $post, $single, $crp_settings;
// Initialise some variables
$fields = '';
$where = '';
$join = '';
$groupby = '';
$orderby = '';
$having = '';
$limits = '';
$match_fields = '';
$defaults = array(
'postid' => FALSE,
'strict_limit' => TRUE,
);
$defaults = array_merge( $defaults, $crp_settings );
// Parse incoming $args into an array and merge it with $defaults
$args = wp_parse_args( $args, $defaults );
// Declare each item in $args as its own variable i.e. $type, $before.
extract( $args, EXTR_SKIP );
// Fix the thumb size in case it is missing
$crp_thumb_size = crp_get_all_image_sizes( $thumb_size );
if ( isset( $crp_thumb_size['width'] ) ) {
$thumb_width = $crp_thumb_size['width'];
$thumb_height = $crp_thumb_size['height'];
}
if ( empty( $thumb_width ) ) {
$thumb_width = $crp_settings['thumb_width'];
}
if ( empty( $thumb_height ) ) {
$thumb_height = $crp_settings['thumb_height'];
}
$post = ( empty( $postid ) ) ? $post : get_post( $postid );
$limit = ( $strict_limit ) ? $limit : ( $limit * 3 );
parse_str( $post_types, $post_types ); // Save post types in $post_types variable
/**
* Filter the post_type clause of the query.
*
* @since 2.2.0
*
* @param array $post_types Array of post types to filter by
* @param int $post->ID Post ID
*/
$post_types = apply_filters( 'crp_posts_post_types', $post_types, $post->ID );
// Are we matching only the title or the post content as well?
if( $match_content ) {
$stuff = $post->post_title . ' ' . crp_excerpt( $post->ID, $match_content_words, false );
$match_fields = "post_title,post_content";
} else {
$stuff = $post->post_title;
$match_fields = "post_title";
}
// Make sure the post is not from the future
$time_difference = get_option( 'gmt_offset' );
$now = gmdate( "Y-m-d H:i:s", ( time() + ( $time_difference * 3600 ) ) );
// Limit the related posts by time
$current_time = current_time( 'timestamp', 0 );
$from_date = $current_time - ( $daily_range * DAY_IN_SECONDS );
$from_date = gmdate( 'Y-m-d H:i:s' , $from_date );
// Create the SQL query to fetch the related posts from the database
if ( ( is_int( $post->ID ) ) && ( '' != $stuff ) ) {
// Fields to return
$fields = " $wpdb->posts.ID ";
// Create the base MATCH clause
$match = $wpdb->prepare( " AND MATCH (" . $match_fields . ") AGAINST ('%s') ", $stuff ); // FULLTEXT matching algorithm
/**
* Filter the MATCH clause of the query.
*
* @since 2.1.0
*
* @param string $match The MATCH section of the WHERE clause of the query
* @param string $stuff String to match fulltext with
* @param int $post->ID Post ID
*/
$match = apply_filters( 'crp_posts_match', $match, $stuff, $post->ID );
// Create the maximum date limit
$now_clause = $wpdb->prepare( " AND $wpdb->posts.post_date < '%s' ", $now ); // Show posts before today
/**
* Filter the Maximum date clause of the query.
*
* @since 2.1.0
*
* @param string $now_clause The Maximum date of the WHERE clause of the query.
* @param int $post->ID Post ID
*/
$now_clause = apply_filters( 'crp_posts_now_date', $now_clause, $post->ID );
// Create the minimum date limit
$from_clause = ( 0 == $daily_range ) ? '' : $wpdb->prepare( " AND $wpdb->posts.post_date >= '%s' ", $from_date ); // Show posts after the date specified
/**
* Filter the Maximum date clause of the query.
*
* @since 2.1.0
*
* @param string $from_clause The Minimum date of the WHERE clause of the query.
* @param int $post->ID Post ID
*/
$from_clause = apply_filters( 'crp_posts_from_date', $from_clause, $post->ID );
// Create the base WHERE clause
$where = $match;
$where .= $now_clause;
$where .= $from_clause;
$where .= " AND $wpdb->posts.post_status = 'publish' "; // Only show published posts
$where .= $wpdb->prepare( " AND $wpdb->posts.ID != %d ", $post->ID ); // Show posts after the date specified
if ( '' != $exclude_post_ids ) {
$where .= " AND $wpdb->posts.ID NOT IN (" . $exclude_post_ids . ") ";
}
$where .= " AND $wpdb->posts.post_type IN ('" . join( "', '", $post_types ) . "') "; // Array of post types
// Create the base LIMITS clause
$limits .= $wpdb->prepare( " LIMIT %d ", $limit );
/**
* Filter the SELECT clause of the query.
*
* @since 2.0.0
*
* @param string $fields The SELECT clause of the query.
* @param int $post->ID Post ID
*/
$fields = apply_filters( 'crp_posts_fields', $fields, $post->ID );
/**
* Filter the JOIN clause of the query.
*
* @since 2.0.0
*
* @param string $join The JOIN clause of the query.
* @param int $post->ID Post ID
*/
$join = apply_filters( 'crp_posts_join', $join, $post->ID );
/**
* Filter the WHERE clause of the query.
*
* @since 2.0.0
*
* @param string $where The WHERE clause of the query.
* @param int $post->ID Post ID
*/
$where = apply_filters( 'crp_posts_where', $where, $post->ID );
/**
* Filter the GROUP BY clause of the query.
*
* @since 2.0.0
*
* @param string $groupby The GROUP BY clause of the query.
* @param int $post->ID Post ID
*/
$groupby = apply_filters( 'crp_posts_groupby', $groupby, $post->ID );
/**
* Filter the HAVING clause of the query.
*
* @since 2.2.0
*
* @param string $having The HAVING clause of the query.
* @param int $post->ID Post ID
*/
$having = apply_filters( 'crp_posts_having', $having, $post->ID );
/**
* Filter the ORDER BY clause of the query.
*
* @since 2.0.0
*
* @param string $orderby The ORDER BY clause of the query.
* @param int $post->ID Post ID
*/
$orderby = apply_filters( 'crp_posts_orderby', $orderby, $post->ID );
/**
* Filter the LIMIT clause of the query.
*
* @since 2.0.0
*
* @param string $limits The LIMIT clause of the query.
* @param int $post->ID Post ID
*/
$limits = apply_filters( 'crp_posts_limits', $limits, $post->ID );
if ( ! empty( $groupby ) ) {
$groupby = 'GROUP BY ' . $groupby;
}
if ( ! empty( $having ) ) {
$having = 'HAVING ' . $having;
}
if ( !empty( $orderby ) ) {
$orderby = 'ORDER BY ' . $orderby;
}
$sql = "SELECT DISTINCT $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $having $orderby $limits";
$results = $wpdb->get_results( $sql );
} else {
$results = false;
}
/**
* Filter object containing the post IDs.
*
* @since 1.9
*
* @param object $results Object containing the related post IDs
*/
return apply_filters( 'get_crp_posts_id', $results );
}
/**
* Content function with user defined filter.
*
* @since 1.9
*
*/
function crp_content_prepare_filter() {
global $crp_settings;
$priority = isset ( $crp_settings['content_filter_priority'] ) ? $crp_settings['content_filter_priority'] : 10;
add_filter( 'the_content', 'ald_crp_content', $priority );
}
add_action( 'template_redirect', 'crp_content_prepare_filter' );
/**
* Filter for 'the_content' to add the related posts.
*
* @since 1.0.1
*
* @param string $content
* @return string After the filter has been processed
*/
function ald_crp_content( $content ) {
global $single, $post, $crp_settings;
if ( ! in_the_loop() ) return $content;
// If this post ID is in the DO NOT DISPLAY list
$exclude_on_post_ids = explode( ',', $crp_settings['exclude_on_post_ids'] );
if ( in_array( $post->ID, $exclude_on_post_ids ) ) return $content; // Exit without adding related posts
// If this post type is in the DO NOT DISPLAY list
parse_str( $crp_settings['exclude_on_post_types'], $exclude_on_post_types ); // Save post types in $exclude_on_post_types variable
if ( in_array( $post->post_type, $exclude_on_post_types ) ) return $content; // Exit without adding related posts
// If the DO NOT DISPLAY meta field is set
$crp_post_meta = get_post_meta( $post->ID, 'crp_post_meta', true );
if ( isset( $crp_post_meta['crp_disable_here'] ) ) {
$crp_disable_here = $crp_post_meta['crp_disable_here'];
} else {
$crp_disable_here = 0;
}
if ( $crp_disable_here ) return $content;
// Else add the content
if ( ( is_single() ) && ( $crp_settings['add_to_content'] ) ) {
return $content.ald_crp( 'is_widget=0' );
} elseif ( ( is_page() ) && ( $crp_settings['add_to_page'] ) ) {
return $content.ald_crp( 'is_widget=0' );
} elseif ( ( is_home() ) && ( $crp_settings['add_to_home'] ) ) {
return $content.ald_crp( 'is_widget=0' );
} elseif ( ( is_category() ) && ( $crp_settings['add_to_category_archives'] ) ) {
return $content.ald_crp( 'is_widget=0' );
} elseif ( ( is_tag() ) && ( $crp_settings['add_to_tag_archives'] ) ) {
return $content.ald_crp( 'is_widget=0' );
} elseif ( ( ( is_tax() ) || ( is_author() ) || ( is_date() ) ) && ( $crp_settings['add_to_archives'] ) ) {
return $content.ald_crp( 'is_widget=0' );
} else {
return $content;
}
}
/**
* Filter to add related posts to feeds.
*
* @since 1.8.4
*
* @param string $content
* @return string Formatted content
*/
function ald_crp_rss( $content ) {
global $post, $crp_settings;
$limit_feed = $crp_settings['limit_feed'];
$show_excerpt_feed = $crp_settings['show_excerpt_feed'];
$post_thumb_op_feed = $crp_settings['post_thumb_op_feed'];
if ( $crp_settings['add_to_feed'] ) {
$output = $content;
$output .= ald_crp( 'is_widget=0&limit='.$limit_feed.'&show_excerpt='.$show_excerpt_feed.'&post_thumb_op='.$post_thumb_op_feed );
return $output;
} else {
return $content;
}
}
add_filter( 'the_excerpt_rss', 'ald_crp_rss' );
add_filter( 'the_content_feed', 'ald_crp_rss' );
/**
* Manual install of the related posts.
*
* @since 1.0.1
*
* @param string List of arguments to control the output
*/
function echo_ald_crp( $args = array() ) {
echo ald_crp( $args );
}
/**
* Enqueue styles.
*
* @since 1.9
*
*/
function crp_heading_styles() {
global $crp_settings;
if ( $crp_settings['include_default_style'] ) {
wp_register_style( 'crp_list_style', plugins_url( 'css/default-style.css', __FILE__ ) );
wp_enqueue_style( 'crp_list_style' );
$custom_css = "
.crp_related a {
width: {$crp_settings['thumb_width']}px;
height: {$crp_settings['thumb_height']}px;
text-decoration: none;
}
.crp_related img {
max-width: {$crp_settings['thumb_width']}px;
margin: auto;
}
";
wp_add_inline_style( 'crp_list_style', $custom_css );
}
}
add_action( 'wp_enqueue_scripts', 'crp_heading_styles' );
/**
* Creates a shortcode [crp limit="5" heading="1" cache="1"].
*
* @since 1.8.6
*
* @param array $atts
* @param string $content (default: null)
* @return Related Posts
*/
function crp_shortcode( $atts, $content = null ) {
global $crp_settings;
$atts = shortcode_atts( array_merge(
$crp_settings,
array( 'heading' => 1 )
), $atts, 'crp' );
$atts['is_widget'] = 1 - $atts['heading'];
return ald_crp( $atts );
}
add_shortcode( 'crp', 'crp_shortcode' );
/**
* Default options.
*
* @since 1.0.1
*
* @return array Default options
*/
function crp_default_options() {
$title = __( '<h3>Related Posts:</h3>', CRP_LOCAL_NAME );
$blank_output_text = __( 'No related posts found', CRP_LOCAL_NAME );
$thumb_default = plugins_url( 'default.png' , __FILE__ );
$crp_get_all_image_sizes = crp_get_all_image_sizes();
// get relevant post types
$args = array(
'public' => true,
'_builtin' => true
);
$post_types = array(
'post' => 'post',
'page' => 'page',
);
$post_types = http_build_query( $post_types, '', '&' );
$crp_settings = array(
// General options
'cache' => false, // Cache output for faster page load
'add_to_content' => true, // Add related posts to content (only on single posts)
'add_to_page' => true, // Add related posts to content (only on single pages)
'add_to_feed' => false, // Add related posts to feed (full)
'add_to_home' => false, // Add related posts to home page
'add_to_category_archives' => false, // Add related posts to category archives
'add_to_tag_archives' => false, // Add related posts to tag archives
'add_to_archives' => false, // Add related posts to other archives
'content_filter_priority' => 10, // Content priority
'show_metabox' => true, // Show metabox to admins
'show_metabox_admins' => false, // Limit to admins as well
'show_credit' => false, // Link to this plugin's page?
// List tuning options
'limit' => '6', // How many posts to display?
'daily_range' => '1095', // How old posts should be displayed?
'match_content' => true, // Match against post content as well as title
'match_content_words' => '0', // How many characters of content should be matched? 0 for all chars
'post_types' => $post_types, // WordPress custom post types
'exclude_categories' => '', // Exclude these categories
'exclude_cat_slugs' => '', // Exclude these categories (slugs)
'exclude_post_ids' => '', // Comma separated list of page / post IDs that are to be excluded in the results
// Output options
'title' => $title, // Add before the content
'blank_output' => true, // Blank output?
'blank_output_text' => $blank_output_text, // Blank output text
'show_excerpt' => false, // Show post excerpt in list item
'show_date' => false, // Show date in list item
'show_author' => false, // Show author in list item
'excerpt_length' => '10', // Length of characters
'title_length' => '60', // Limit length of post title
'link_new_window' => false, // Open link in new window - Includes target="_blank" to links
'link_nofollow' => false, // Includes rel="nofollow" to links
'before_list' => '<ul>', // Before the entire list
'after_list' => '</ul>', // After the entire list
'before_list_item' => '<li>', // Before each list item
'after_list_item' => '</li>', // After each list item
'exclude_on_post_ids' => '', // Comma separate list of page/post IDs to not display related posts on
'exclude_on_post_types' => '', // WordPress custom post types
// Thumbnail options
'post_thumb_op' => 'inline', // Default option to display text and no thumbnails in posts
'thumb_size' => 'crp_thumbnail', // Default thumbnail size
'thumb_height' => '150', // Height of thumbnails
'thumb_width' => '150', // Width of thumbnails
'thumb_crop' => true, // Crop mode. default is hard crop
'thumb_html' => 'html', // Use HTML or CSS for width and height of the thumbnail?
'thumb_meta' => 'post-image', // Meta field that is used to store the location of default thumbnail image
'scan_images' => true, // Scan post for images
'thumb_default' => $thumb_default, // Default thumbnail image
'thumb_default_show' => true, // Show default thumb if none found (if false, don't show thumb at all)
// Feed options
'limit_feed' => '5', // How many posts to display in feeds
'post_thumb_op_feed' => 'text_only', // Default option to display text and no thumbnails in Feeds
'thumb_height_feed' => '50', // Height of thumbnails in feed
'thumb_width_feed' => '50', // Width of thumbnails in feed
'show_excerpt_feed' => false, // Show description in list item in feed
// Custom styles
'custom_CSS' => '', // Custom CSS to style the output
'include_default_style' => true, // Include default style
);
/**
* Filters the default options array.
*
* @since 1.9.1
*
* @param array $crp_settings Default options
*/
return apply_filters( 'crp_default_options', $crp_settings );
}
/**
* Function to read options from the database.
*
* @since 1.0.1
*
* @return array Contextual Related Posts options
*/
function crp_read_options() {
$crp_settings_changed = false;
$defaults = crp_default_options();
$crp_settings = array_map( 'stripslashes', (array) get_option( 'ald_crp_settings') );
unset( $crp_settings[0] ); // produced by the (array) casting when there's nothing in the DB
foreach ( $defaults as $k=>$v ) {
if ( ! isset( $crp_settings[ $k ] ) ) {
$crp_settings[ $k ] = $v;
}
$crp_settings_changed = true;
}
if ( true == $crp_settings_changed ) {
update_option('ald_crp_settings', $crp_settings);
}
/**
* Filters the options array.
*
* @since 1.9.1
*
* @param array $crp_settings Options read from the database
*/
return apply_filters( 'crp_read_options', $crp_settings );
}
/**
* Filter for wp_head to include the custom CSS.
*
* @since 1.8.4
*
* @return string Echoed string with the CSS output in the Header
*/
function crp_header() {
global $wpdb, $post, $single, $crp_settings;
$crp_custom_CSS = stripslashes( $crp_settings['custom_CSS'] );
// Add CSS to header
if ( '' != $crp_custom_CSS ) {
if ( ( is_single() ) ) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
} elseif((is_page())) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
} elseif ( ( is_home() ) && ( $crp_settings['add_to_home'] ) ) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
} elseif ( ( is_category() ) && ( $crp_settings['add_to_category_archives'] ) ) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
} elseif ( ( is_tag() ) && ( $crp_settings['add_to_tag_archives'] ) ) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
} elseif( ( ( is_tax() ) || ( is_author() ) || ( is_date() ) ) && ( $crp_settings['add_to_archives'] ) ) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
} elseif ( is_active_widget( false, false, 'CRP_Widget', true ) ) {
echo '<style type="text/css">'.$crp_custom_CSS.'</style>';
}
}
}
add_action( 'wp_head', 'crp_header' );
/**
* Fired for each blog when the plugin is activated.
*
* @since 1.0.1
*
* @param boolean $network_wide True if WPMU superadmin uses
* "Network Activate" action, false if
* WPMU is disabled or plugin is
* activated on an individual blog.
*/
function crp_activate( $network_wide ) {
global $wpdb;
if ( is_multisite() && $network_wide ) {
// Get all blogs in the network and activate plugin on each one
$blog_ids = $wpdb->get_col( "
SELECT blog_id FROM $wpdb->blogs
WHERE archived = '0' AND spam = '0' AND deleted = '0'
" );
foreach ( $blog_ids as $blog_id ) {
switch_to_blog( $blog_id );
crp_single_activate();
}
// Switch back to the current blog
restore_current_blog();
} else {
crp_single_activate();
}
}
register_activation_hook( __FILE__, 'crp_activate' );
/**
* Fired for each blog when the plugin is activated.
*
* @since 2.0.0
*
*/
function crp_single_activate() {
global $wpdb;
$crp_settings = crp_read_options();
$wpdb->hide_errors();