Profile Builder - make the custom avatars global for WP Multisite

fv-pb-global-avatar.php

<?php

if( is_multisite() && function_exists('switch_to_blog') ) {
  add_filter( 'get_avatar', 'fv_pb_global_avatar_start', 20, 5 );
  add_filter( 'get_avatar', 'fv_pb_global_avatar_end', 22, 5 );

  function fv_pb_global_avatar_start( $avatar ) {
    switch_to_blog(1);
    return $avatar;
  }

  function fv_pb_global_avatar_end($avatar) {
    restore_current_blog();
    $avatar = preg_replace( "~src='.*?/wp-content~", "src='/wp-content", $avatar );
    return $avatar;
  }
}


add_action( 'current_screen', 'fv_wppb_upload_to_master_blog', 0 );

function fv_wppb_upload_to_master_blog() {
  if ( isset($_REQUEST['action']) && 'upload-attachment' == $_REQUEST['action'] && isset($_REQUEST['wppb_upload']) && 'true' == $_REQUEST['wppb_upload'] ) {
    switch_to_blog(1);
  }
}