[ WordPress ] 記事のシェア数を取得し表示する関数たち。

functions.php

<?php
/**
 * Get Facebook count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_facebook_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = ( get_permalink( $post_id ) !== false ) ? get_permalink( $post_id ) : false;
    $result  = get_transient( 'facebook_count_' . $post_id );
    $answer  = array();

    if ( $url !== false && $result === false ) {
        $response = wp_remote_get( 'https://api.facebook.com/method/links.getStats?urls=' . rawurlencode( $url ) . '&format=json' );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode($response['body']);
            $answer   = get_object_vars( $response[0] );
            $result   = (int)$answer['total_count'];
            set_transient( 'facebook_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}
/**
 * Get Twitter count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_twitter_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = ( get_permalink( $post_id ) !== false ) ? get_permalink( $post_id ) : false;
    $result  = get_transient( 'twitter_count_' . $post_id );

    if ( $url !== false && $result === false ) {
        $response = wp_remote_get( 'http://urls.api.twitter.com/1/urls/count.json?url=' . rawurlencode( $url ) . '&callback=?' );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode($response['body']);
            $result   = (int)$response->count;
            set_transient( 'twitter_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}
/**
 * Get Google Plus count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_googleplus_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = ( get_permalink( $post_id ) !== false ) ? get_permalink( $post_id ) : false;
    $result  = get_transient( 'googleplus_count_' . $post_id );
    $remote  = 'https://clients6.google.com/rpc';
    $bosy    = array(
        'method' => 'pos.plusones.get',
        'id'     => 'p',
        'params' => array(
            'nolog'   => true,
            'id'      => $url,
            'source'  => 'widget',
            'userId'  => '@viewer',
            'groupId' => '@self'
        ),
        'jsonrpc'    => '2.0',
        'key'        => 'p',
        'apiVersion' => 'v1'
    );
    $args = array(
        'method'  => 'POST',
        'timeout' => 5,
        'headers' => array( 'Content-type' => 'application/json' ),
        'body'    => json_encode( $bosy )
    );

    if ( $url !== false && $result === false ) {
        $response = wp_remote_post( $remote, $args );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode($response['body']);
            $result   = (int)$response->result->metadata->globalCounts->count;
            set_transient( 'googleplus_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}
/**
 * Get Hatena bookmark count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_hatena_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = ( get_permalink( $post_id ) !== false ) ? get_permalink( $post_id ) : false;
    $result  = get_transient( 'hatena_count_' . $post_id );

    if ( $url !== false && $result === false ) {
        $response = wp_remote_get( 'http://api.b.st-hatena.com/entry.count?url=' . rawurlencode( $url ) );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode($response['body']);
            $result   = (int)$response;
            set_transient( 'hatena_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}
/**
 * Get Pinterest count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_pinterest_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = ( get_permalink( $post_id ) !== false ) ? get_permalink( $post_id ) : false;
    $result  = get_transient( 'pinterest_count_' . $post_id );

    if ( $url !== false && $result === false ) {
        $response = wp_remote_get( 'http://api.pinterest.com/v1/urls/count.json?url=' . rawurlencode( $url ) . '&callback=receiveCount' );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode( preg_replace( '/\AreceiveCount\((.*)\)$/', "\\1", $response['body'] ) );
            $result   = (int)$response->count;
            set_transient( 'pinterest_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}
/**
 * Get Linkedin count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_linkedin_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = ( get_permalink( $post_id ) !== false ) ? get_permalink( $post_id ) : false;
    $result  = get_transient( 'linkedin_count_' . $post_id );

    if ( $url !== false && $result === false ) {
        $response = wp_remote_get( 'http://www.linkedin.com/countserv/count/share?url=' . rawurlencode( $url ) . '&format=json' );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode( $response['body'] );
            $result   = (int)$response->count;
            set_transient( 'linkedin_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}
/**
 * Get Feedly count.
 *
 * @param  intval $post_id
 * @return intval
 */
function get_feedly_count( $post_id = 0 ) {
    global $post;
    $post_id = ( (int)$post_id > 0 ) ? (int)$post_id : (int)$post->ID;
    $url     = get_feed_link( 'rss2' );
    $result  = get_transient( 'feedly_count_' . $post_id );

    if ( isset( $url ) && $result === false ) {
        $response = wp_remote_get( 'http://cloud.feedly.com/v3/feeds/' . rawurlencode( 'feed/' . $url ) );
        if ( ! is_wp_error( $response ) && $response['response']['code'] === 200 ) {
            $response = json_decode( $response['body'] );
            $result   = ( ! empty( $response ) ) ? (int)$response->subscribers : 0;
            set_transient( 'feedly_count_' . $post_id, $result, 60 * MINUTE_IN_SECONDS );
        } else {
            $result = false;
        }
    }

    return (int)$result;
}