WP User Profile Custom Field

//User profile custom field for extra information (Backend in Dashboard user profile)

// user profile custom field
add_action('show_user_profile', 'yoursite_extra_user_profile_fields');
add_action('edit_user_profile', 'yoursite_extra_user_profile_fields');
function yoursite_extra_user_profile_fields($user)
{
    ?>
    <h3><?php _e("Extra profile information", "blank"); ?></h3>
    <table class="form-table">
        <tr>
            <th><label for="designation"><?php _e("Designation"); ?></label></th>
            <td>
                <input type="text" name="designation" id="designation" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('designation', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your designation."); ?></span>
            </td>
        </tr>
        <tr>
            <th><label for="facebook_p_link"><?php _e("Facebook Profile Link"); ?></label></th>
            <td>
                <input type="text" name="facebook_p_link" id="facebook_p_link" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('facebook_p_link', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your Facebook Link."); ?></span>
            </td>
        </tr>
        <tr>
            <th><label for="twitter_p_link"><?php _e("Twitter Profile Link"); ?></label></th>
            <td>
                <input type="text" name="twitter_p_link" id="twitter_p_link" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('twitter_p_link', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your Twitter Link."); ?></span>
            </td>
        </tr>
        <tr>
            <th><label for="linkedin_p_link"><?php _e("Linkedin Profile Link"); ?></label></th>
            <td>
                <input type="text" name="linkedin_p_link" id="linkedin_p_link" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('linkedin_p_link', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your Twitter Link."); ?></span>
            </td>
        </tr>
        <tr>
            <th><label for="pinterest_p_link"><?php _e("Pintrest Profile Link"); ?></label></th>
            <td>
                <input type="text" name="pinterest_p_link" id="pinterest_p_link" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('pinterest_p_link', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your Pinterest Link."); ?></span>
            </td>
        </tr>
        <tr>
            <th><label for="gplus_p_link"><?php _e("Google Plus Profile Link"); ?></label></th>
            <td>
                <input type="text" name="gplus_p_link" id="gplus_p_link" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('gplus_p_link', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your Google Plus Link."); ?></span>
            </td>
        </tr>
        <tr>
            <th><label for="vk_p_link"><?php _e("VK Profile Link"); ?></label></th>
            <td>
                <input type="text" name="vk_p_link" id="vk_p_link" class="regular-text"
                       value="<?php echo esc_attr(get_the_author_meta('vk_p_link', $user->ID)); ?>"/><br/>
                <span class="description"><?php _e("Enter your VK Link."); ?></span>
            </td>
        </tr>
    </table>
    <?php
}

// user profile data save
add_action('personal_options_update', 'yoursite_save_extra_user_profile_fields');
add_action('edit_user_profile_update', 'yoursite_save_extra_user_profile_fields');
function yoursite_save_extra_user_profile_fields($user_id)
{
    $saved = false;
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'designation', $_POST['designation']);
        $saved = true;
    }
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'facebook_p_link', $_POST['facebook_p_link']);
        $saved = true;
    }
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'twitter_p_link', $_POST['twitter_p_link']);
        $saved = true;
    }
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'linkedin_p_link', $_POST['linkedin_p_link']);
        $saved = true;
    }
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'pinterest_p_link', $_POST['pinterest_p_link']);
        $saved = true;
    }
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'gplus_p_link', $_POST['gplus_p_link']);
        $saved = true;
    }
    if (current_user_can('edit_user', $user_id)) {
        update_user_meta($user_id, 'vk_p_link', $_POST['vk_p_link']);
        $saved = true;
    }
    return true;
}

//Display result in Front-end
  <div class="ic-author-info media">
    <?php echo get_avatar(get_the_author_meta()); ?>
    <div class="media-body">
      <h4><?php echo get_the_author(); ?></h4>
      <span><?php echo esc_attr(get_the_author_meta('designation', $user_ID)); ?></span>
      <p><?php echo get_the_author_meta('description'); ?></p>
        <div class="ic-social">
          <ul>

            <?php if (!empty(get_the_author_meta('facebook_p_link', $user->ID))) : ?>
                <li>
                    <a href="<?php echo esc_url(get_the_author_meta('facebook_p_link', $user->ID)); ?>">
                      <i class="icofont icofont-social-facebook"></i>
                    </a>
                  </li>
            <?php endif; ?>

            <?php if (!empty(get_the_author_meta('twitter_p_link', $user->ID))) : ?>
                <li>
                    <a href="<?php echo esc_url(get_the_author_meta('twitter_p_link', $user->ID)); ?>">
                      <i class="icofont icofont-social-facebook"></i>
                    </a>
                  </li>
            <?php endif; ?>
            <?php if (!empty(get_the_author_meta('linkedin_p_link', $user->ID))) : ?>
                <li>
                    <a href="<?php echo esc_url(get_the_author_meta('linkedin_p_link', $user->ID)); ?>">
                      <i class="icofont icofont-social-linkedin"></i>
                    </a>
                  </li>
            <?php endif; ?>
            <?php if (!empty(get_the_author_meta('pinterest_p_link', $user->ID))) : ?>
                <li>
                    <a href="<?php echo esc_url(get_the_author_meta('pinterest_p_link', $user->ID)); ?>">
                      <i class="icofont icofont-social-pinterest"></i>
                    </a>
                  </li>
            <?php endif; ?>
            <?php if (!empty(get_the_author_meta('gplus_p_link', $user->ID))) : ?>
                <li>
                    <a href="<?php echo esc_url(get_the_author_meta('gplus_p_link', $user->ID)); ?>">
                      <i class="icofont icofont-social-google-plus"></i>
                    </a>
                  </li>
            <?php endif; ?>
            <?php if (!empty(get_the_author_meta('vk_p_link', $user->ID))) : ?>
                <li>
                    <a href="<?php echo esc_url(get_the_author_meta('vk_p_link', $user->ID)); ?>">
                      <i class="icofont icofont-social-social-vk"></i>
                    </a>
                  </li>
            <?php endif; ?>
          </ul>
        </div>
        <div class="ic-navigation">
            <ul>
                <?php previous_post_link('<li class="float-left nav-prev">%link</li>', '<span><i class="icofont icofont-long-arrow-left"></i></span> Previous'); ?>
                <?php next_post_link('<li class="float-right nav-next">%link</li>', 'Next <span><i class="icofont icofont-long-arrow-right"></i></span>'); ?>
            </ul>
        </div>
    </div>
  </div>