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apply_filters( 'pre_get_avatar', string|null $avatar, mixed $id_or_email, array $args )

Allows the HTML for a user’s avatar to be returned early.

Passing a non-null value will effectively short-circuit get_avatar(), passing the value through the ‘get_avatar’ filter and returning early.

$avatar: (string|null) HTML for the user's avatar. Default null.
$id_or_email: (mixed) The avatar to retrieve. Accepts a user_id, Gravatar MD5 hash, user email, WP_User object, WP_Post object, or WP_Comment object.
$args: (array) Arguments passed to get_avatar_url(), after processing.

Used By	Description
wp-includes/pluggable.php: get_avatar()	Retrieve the avatar `<img>` tag for a user, email address, MD5 hash, comment, or post.

Version	Description
4.2.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/pre_get_avatar