Display author’s name and avatar in post’s sidebar

Display author’s avatar and name in single page sidebar. Add this code in sidebar.php or single.php

if ( is_singular( 'post' ) ) {
    echo get_avatar( get_the_author_meta( 'user_email' ), 75 );
    echo get_the_author_meta( 'display_name' );
}

Here 75 number is the avatar size.

I hope it will help you.

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