Replace WordPress Gravatar Upload

wordness-addons.php

<?php 
/**
 *  Replace default Gravatar with branding logo.
 */
function wordness_new_default_gravatar($avatar_defaults) 
{ 
    //be safe default
    $def = esc_url( plugin_dir_url( dirname(__FILE__) ) 
           . 'css/poplogin-default-logo.png' );
  
    $defavatar = get_option( 'wordness_options' )['wordness_upload_logo'];
    if($defavatar == '') $defavatar = esc_url( $def );
    
    $avatar_defaults[$defavatar] = "Default Gravatar";
    return $avatar_defaults; 

} 
    add_filter( 'avatar_defaults', 'wordness_new_default_gravatar' ); 
   
/**
 * add_user_meta( $user_id, $meta_key, $meta_value, $unique )
 * https://developer.wordpress.org/plugins/users/working-with-user-metadata/
 * @hook edit_user_profile
 */
/**
 * The field on the editing screens.
 *
 * @param $user WP_User user object
 */
    add_action( 'show_user_profile', 'wordness_user_profile_avatar' );
    add_action( 'edit_user_profile', 'wordness_user_profile_avatar' );
    add_action( 'personal_options_update', 'wordness_save_extra_user_profile_fields' );
    add_action( 'edit_user_profile_update', 'wordness_save_extra_user_profile_fields' );

function wordness_user_profile_avatar( $user )
{ 
//$user_id = get_current_user_id(); 
?>
<h3><?php esc_html_e( 'Upload Personal Avatar', 'wordness' ); ?></h3>
   <table>
	<tr>
	<th><label for="wordness_custom_avatar">Your Avatar: </label></th>
	<td>
	<input type="text" name="wordness_custom_avatar" id="wordness_custom_avatar" 
	       value="<?php echo esc_attr( get_the_author_meta( 
	       'wordness_custom_avatar', $user->ID ) ); ?>" class="regular-text" />
    <br>
	<span><?php esc_html_e( 'Type in the URL of your avatar or Upload an image in Media page and copy url.
Image should be 70x70 pixels.', 'wordness' ); ?></span>

	<?php 
    $def = esc_url( plugin_dir_url(dirname(__FILE__)) . 'css/poplogin-default-logo.png' );
    //be safe default
    $wn_avatar = get_the_author_meta( 'wordness_custom_avatar', $user->ID );
    if($wn_avatar == '') $wn_avatar = esc_url( $def );
    print( 
    '<div class="image-preview-wrapper">
    <img id="image-preview" src="' . esc_url( $wn_avatar ) . '" height=64>
    </div>' );  
?>
</td>
</tr>
</tbody></table>

<?php 
} 
/**
 * Saves avatar image to user_meta
 * $user_id, $meta_key, $meta_value, $prev_value = ''
 * @param $_POST uploaded file
 * @param int $user_id ID of user to assign image to
 */ 
function wordness_save_extra_user_profile_fields( $user_id )
{ 
//$user_id = get_current_user_id();
if ( !current_user_can( 'edit_user', $user_id ) ) return false; 
	update_user_meta( $user_id, 'wordness_custom_avatar', 
                        $_POST['wordness_custom_avatar'] );
}

/**
 * Use Custom Avatar if Provided
 * @author Bill Erickson
 * @link http://www.billerickson.net/wordpress-custom-avatar/
 *
 */
function wordness_gravatar_filter($avatar, $id_or_email, $size, $default, $alt) 
{
	
	// If provided an email and it doesn't exist as WP user
	$email = is_object( $id_or_email ) ? $id_or_email->comment_author_email : 
	$id_or_email;
	
	if( is_email( $email ) && ! email_exists( $email ) )
		return $avatar;
    	$custom_avatar = get_the_author_meta('wordness_custom_avatar');
	if ($custom_avatar) 
		$return = '<img src="'.$custom_avatar.'" width="'.$size.'" 
		height="'.$size.'" alt="'.$alt.'" />';		
	elseif ($avatar) 
		$return = $avatar;
	else 
		$return = '<img src="'.$default.'" width="'.$size.'" height="'.$size.'" 
		alt="'.$alt.'" />';

    	return $return;
} 
    add_filter('get_avatar', 'wordness_gravatar_filter', 10, 5); 

/** 
 * Count the views when someone refreshes or views page.
 * 
 * @uses do_shortcode( '[wordness_postcount]' ).
 * + get_post_type, is_single
 */

function wordness_display_post_count_views( $content ) {
    //grab option
    $group = get_option('wordness_fields');
    $postcount_check = $group['wordness_postcount_check']; 
    $postcounter = (empty( $postcount_check ) ) ? 0 : $postcount_check;
        //validate + check
        if ( is_single() && 'post' == get_post_type() && $postcounter != 0 ) 
        {
        $postcount = do_shortcode( '[wordness_postcount]' );
        ob_start();
    
        echo $content . '<div class="wnclearfix"></div>' . $postcount;

        $output = ob_get_clean();
        return $output; 
        
        } else {
            return $content;
    }
}
add_filter( 'the_content', 'wordness_display_post_count_views' ); 

//ToDo: serialize postmeta???
//http://wpsnipp.com/index.php/cache/track-post-views-without-a-plugin-using-post-meta/
function wordness_getPostViews($postID)
{
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count=='')
    {
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
        return "0 View";
    }
    return $count.' Views';
}
function wordness_setPostViews($postID) 
{
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count=='')
    {
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    }else{
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}
// Remove issues with prefetching adding extra views
//remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);