bp_core_get_group_avatar( $legacy_user_avatar_name,  $legacy_group_avatar_name,  $avatar_size,  $avatar_folder_dir,  $avatar_folder_url )

function bp_core_get_group_avatar( $legacy_user_avatar_name, $legacy_group_avatar_name, $avatar_size, $avatar_folder_dir, $avatar_folder_url ) {

	$group_avatar = '';

	if ( file_exists( $avatar_folder_dir ) ) {

		// Open directory.
		if ( $av_dir = opendir( $avatar_folder_dir ) ) {

			// Stash files in an array once to check for one that matches.
			$avatar_files = array();
			while ( false !== ( $avatar_file = readdir( $av_dir ) ) ) {
				// Only add files to the array (skip directories).
				if ( 2 < strlen( $avatar_file ) ) {
					$avatar_files[] = $avatar_file;
				}
			}

			// Check for array.
			if ( 0 < count( $avatar_files ) ) {

				// Check for current avatar.
				foreach ( $avatar_files as $key => $value ) {
					if ( strpos( $value, $avatar_size ) !== false ) {
						$group_avatar = $avatar_folder_url . '/' . $avatar_files[ $key ];
					}
				}

				// Legacy avatar check.
				if ( ! isset( $group_avatar ) ) {
					foreach ( $avatar_files as $key => $value ) {
						if ( strpos( $value, $legacy_user_avatar_name ) !== false ) {
							$group_avatar = $avatar_folder_url . '/' . $avatar_files[ $key ];
						}
					}

					// Legacy group avatar check.
					if ( ! isset( $group_avatar ) ) {
						foreach ( $avatar_files as $key => $value ) {
							if ( strpos( $value, $legacy_group_avatar_name ) !== false ) {
								$group_avatar = $avatar_folder_url . '/' . $avatar_files[ $key ];
							}
						}
					}
				}
			}
		}
		// Close the avatar directory.
		closedir( $av_dir );
	}

	return $group_avatar;
}