It’s fairly simple to construct the Gravatar URL yourself, it’s just an MD5 hash of the user’s email address. <?php $gravatar=”http://www.gravatar.com/avatar/” . md5(strtolower($email)) . ‘&s=32’; ?> <div class=”avatar” style=”background: url(<?php echo $gravatar ?>);” ></div> The s parameter at the end there defines the size of the image in pixels. Using Gravatars – WordPress Codex
You can use the get_avatar filter to change the output or avatar_defaults to add new image that can be placed on your server. Here is an example code for adding new avatar that you can set as default from the Settings > Discussion page. add_filter( ‘avatar_defaults’, ‘add_new_gravatar_image’ ); function add_new_gravatar_image($avatar_defaults) { $myavatar=”http://yoursite.com/image.png”; $avatar_defaults[$myavatar] = “Default … Read more
You can jump start by using following example. Here I’ll be listing users and loop through them to display avatar and display name. <?php $blogusers = get_users(); // Array of WP_User objects. foreach ( $blogusers as $user ) { /* Here passing user email and avater size */ echo get_avatar( $user->user_email , 96 ); echo … Read more
I figured this out. The server I am working on doesn’t have access to the outside. So, even though the image is in my template folder, the gravatar.com call in front of the image path was causing the error.
Just generate the URL yourself. It’s just a hash of the user’s email address. function get_gravatar_url( $email ) { $hash = md5( strtolower( trim ( $email ) ) ); return ‘http://gravatar.com/avatar/’ . $hash; } This function requires that you pass the user’s email address in … but you could do anything you need to programatically … Read more
Unfortunately at moment Gravatar service itself only accepts single number for size and only serves square images. So you have to achieve it with CSS or download, modify and cache images.
I had a look at the avatar related functions/filters WP provides and I don’t think there is a direct way to tell, if the avatar is a real one or the default image as you only have url to work with. But, I also looked at the Gravatar implementation guide, https://en.gravatar.com/site/implement/images/, which notes that you … Read more
The function that does all the heavy lifting for avatars is get_avatar. It’s a pluggable function, meaning you can replace it with a plugin. Get avatar also has a handy filter you can use to override things programatically. So, a few options: (1) completely replace get_avatar which might have unintended side effects and break things … Read more
The get_avatar() function applies a get_avatar filter hook, that you can use to change the avatar markup: return apply_filters(‘get_avatar’, $avatar, $id_or_email, $size, $default, $alt); I think this would be the correct way to hook into this filter: function mytheme_get_avatar( $avatar ) { $avatar=”<img src=”https://wordpress.stackexchange.com/questions/22728/<” . get_template_directory_uri() . ‘/images/authors/’ . get_the_author_ID() . ‘.jpg” alt=”‘ . get_the_author() … Read more
If you want a super-lightweight solution and don’t mind dabbling in a little code, drop this in your functions.php; function __default_local_avatar() { // this assumes default_avatar.png is in wp-content/themes/active-theme/images return get_bloginfo(‘template_directory’) . ‘/images/default_avatar.png’; } add_filter( ‘pre_option_avatar_default’, ‘__default_local_avatar’ ); Alternatively, if you want a bit more juice, with the ability to manage everything in the admin, … Read more