admin_url( 'admin-ajax.php' ), 'nonce' => wp_create_nonce( 'ajax-nonce' ) ) ); } add_action( 'init', 'like_scripts' ); /** * (3) Save like data */ add_action( 'wp_ajax_nopriv_jm-post-like', 'jm_post_like' ); add_action( 'wp_ajax_jm-post-like', 'jm_post_like' ); function jm_post_like() { $nonce = $_POST['nonce']; if ( ! wp_verify_nonce( $nonce, 'ajax-nonce' ) ) die ( 'Nope!' ); if ( isset( $_POST['jm_post_like'] ) ) { $post_id = $_POST['post_id']; // post id $post_like_count = get_post_meta( $post_id, "_post_like_count", true ); // post like count if ( is_user_logged_in() ) { // user is logged in $user_id = get_current_user_id(); // current user $meta_POSTS = get_user_option( "_liked_posts", $user_id ); // post ids from user meta $meta_USERS = get_post_meta( $post_id, "_user_liked" ); // user ids from post meta $liked_POSTS = NULL; // setup array variable $liked_USERS = NULL; // setup array variable if ( count( $meta_POSTS ) != 0 ) { // meta exists, set up values $liked_POSTS = $meta_POSTS; } if ( !is_array( $liked_POSTS ) ) // make array just in case $liked_POSTS = array(); if ( count( $meta_USERS ) != 0 ) { // meta exists, set up values $liked_USERS = $meta_USERS[0]; } if ( !is_array( $liked_USERS ) ) // make array just in case $liked_USERS = array(); $liked_POSTS['post-'.$post_id] = $post_id; // Add post id to user meta array $liked_USERS['user-'.$user_id] = $user_id; // add user id to post meta array $user_likes = count( $liked_POSTS ); // count user likes if ( !AlreadyLiked( $post_id ) ) { // like the post update_post_meta( $post_id, "_user_liked", $liked_USERS ); // Add user ID to post meta update_post_meta( $post_id, "_post_like_count", ++$post_like_count ); // +1 count post meta update_user_option( $user_id, "_liked_posts", $liked_POSTS ); // Add post ID to user meta update_user_option( $user_id, "_user_like_count", $user_likes ); // +1 count user meta print $post_like_count; // update count on front end } else { // unlike the post $pid_key = array_search( $post_id, $liked_POSTS ); // find the key $uid_key = array_search( $user_id, $liked_USERS ); // find the key unset( $liked_POSTS[$pid_key] ); // remove from array unset( $liked_USERS[$uid_key] ); // remove from array $user_likes = count( $liked_POSTS ); // recount user likes update_post_meta( $post_id, "_user_liked", $liked_USERS ); // Remove user ID from post meta update_post_meta($post_id, "_post_like_count", --$post_like_count ); // -1 count post meta update_user_option( $user_id, "_liked_posts", $liked_POSTS ); // Remove post ID from user meta update_user_option( $user_id, "_user_like_count", $user_likes ); // -1 count user meta echo "already".$post_like_count; // update count on front end } } else { // user is not logged in (anonymous) $ip = $_SERVER['REMOTE_ADDR']; // user IP address $meta_IPS = get_post_meta( $post_id, "_user_IP" ); // stored IP addresses $liked_IPS = NULL; // set up array variable if ( count( $meta_IPS ) != 0 ) { // meta exists, set up values $liked_IPS = $meta_IPS[0]; } if ( !is_array( $liked_IPS ) ) // make array just in case $liked_IPS = array(); if ( !in_array( $ip, $liked_IPS ) ) // if IP not in array $liked_IPS['ip-'.$ip] = $ip; // add IP to array if ( !AlreadyLiked( $post_id ) ) { // like the post update_post_meta( $post_id, "_user_IP", $liked_IPS ); // Add user IP to post meta update_post_meta( $post_id, "_post_like_count", ++$post_like_count ); // +1 count post meta print $post_like_count; // update count on front end } else { // unlike the post $ip_key = array_search( $ip, $liked_IPS ); // find the key unset( $liked_IPS[$ip_key] ); // remove from array update_post_meta( $post_id, "_user_IP", $liked_IPS ); // Remove user IP from post meta update_post_meta( $post_id, "_post_like_count", --$post_like_count ); // -1 count post meta echo "already".$post_like_count; // update count on front end } } } exit; } /** * (4) Test if user already liked post */ function AlreadyLiked( $post_id ) { // test if user liked before if ( is_user_logged_in() ) { // user is logged in $user_id = get_current_user_id(); // current user $meta_USERS = get_post_meta( $post_id, "_user_liked" ); // user ids from post meta $liked_USERS = ""; // set up array variable if ( count( $meta_USERS ) != 0 ) { // meta exists, set up values $liked_USERS = $meta_USERS[0]; } if( !is_array( $liked_USERS ) ) // make array just in case $liked_USERS = array(); if ( in_array( $user_id, $liked_USERS ) ) { // True if User ID in array return true; } return false; } else { // user is anonymous, use IP address for voting $meta_IPS = get_post_meta( $post_id, "_user_IP" ); // get previously voted IP address $ip = $_SERVER["REMOTE_ADDR"]; // Retrieve current user IP $liked_IPS = ""; // set up array variable if ( count( $meta_IPS ) != 0 ) { // meta exists, set up values $liked_IPS = $meta_IPS[0]; } if ( !is_array( $liked_IPS ) ) // make array just in case $liked_IPS = array(); if ( in_array( $ip, $liked_IPS ) ) { // True is IP in array return true; } return false; } } /** * (5) Front end button */ function getPostLikeLink( $post_id ) { $like_count = get_post_meta( $post_id, "_post_like_count", true ); // get post likes $count = ( empty( $like_count ) || $like_count == "0" ) ? '0' : esc_attr( $like_count ); if ( AlreadyLiked( $post_id ) ) { $class = esc_attr( ' liked' ); $title = esc_attr( 'Unlike' ); $heart = ''; } else { $class = esc_attr( '' ); $title = esc_attr( 'Like' ); $heart = ''; } $output = ''.$heart.''.$count.''; return $output; } /** * (6) Retrieve User Likes and Show on Profile */ add_action( 'show_user_profile', 'show_user_likes' ); add_action( 'edit_user_profile', 'show_user_likes' ); function show_user_likes( $user ) { ?>
ID ); if ( !empty( $user_likes ) && count( $user_likes ) > 0 ) { $the_likes = $user_likes; } else { $the_likes = ''; } if ( !is_array( $the_likes ) ) $the_likes = array(); $count = count( $the_likes ); $i=0; if ( $count > 0 ) { $like_list = ''; echo "

\n"; foreach ( $the_likes as $the_like ) { $i++; $like_list .= "" . get_the_title( $the_like ) . "\n"; if ($count != $i) $like_list .= " · "; else $like_list .= "

\n"; } print $like_list; } else { echo "

" . esc_html__( 'You don\'t like anything yet.', 'nanopress' ) . "

\n"; } ?>
0 ) { $the_likes = $user_likes; } else { $the_likes = ''; } if ( !is_array( $the_likes ) ) $the_likes = array(); $count = count( $the_likes ); if ( $count > 0 ) { $limited_likes = array_slice( $the_likes, 0, 5 ); // this will limit the number of posts returned to 5 $like_list .= "\n"; } print $like_list; } } /** * (9) Outputs a list of the 5 posts with the most user likes TODAY * Markup assumes sidebar/widget usage */ function jm_most_popular_today() { global $post; $today = date('j'); $year = date('Y'); $args = array( 'year' => $year, 'day' => $today, 'post_type' => array( 'post', 'enter-your-comma-separated-post-types-here' ), 'meta_key' => '_post_like_count', 'orderby' => 'meta_value_num', 'order' => 'DESC', 'posts_per_page' => 5 ); $pop_posts = new WP_Query( $args ); if ( $pop_posts->have_posts() ) { echo "\n"; } wp_reset_postdata(); } /** * (10) Outputs a list of the 5 posts with the most user likes for THIS MONTH * Markup assumes sidebar/widget usage */ function jm_most_popular_month() { global $post; $month = date('m'); $year = date('Y'); $args = array( 'year' => $year, 'monthnum' => $month, 'post_type' => array( 'post', 'enter-your-comma-separated-post-types-here' ), 'meta_key' => '_post_like_count', 'orderby' => 'meta_value_num', 'order' => 'DESC', 'posts_per_page' => 5 ); $pop_posts = new WP_Query( $args ); if ( $pop_posts->have_posts() ) { echo "\n"; } wp_reset_postdata(); } /** * (11) Outputs a list of the 5 posts with the most user likes for THIS WEEK * Markup assumes sidebar/widget usage */ function jm_most_popular_week() { global $post; $week = date('W'); $year = date('Y'); $args = array( 'year' => $year, 'w' => $week, 'post_type' => array( 'post', 'enter-your-comma-separated-post-types-here' ), 'meta_key' => '_post_like_count', 'orderby' => 'meta_value_num', 'order' => 'DESC', 'posts_per_page' => 5 ); $pop_posts = new WP_Query( $args ); if ( $pop_posts->have_posts() ) { echo "\n"; } wp_reset_postdata(); } /** * (12) Outputs a list of the 5 posts with the most user likes for ALL TIME * Markup assumes sidebar/widget usage */ function jm_most_popular() { global $post; echo "\n"; }