I do not see a direct function in the flysystem-dropbox to get a shareable url, but I do find a function in the dropbox-sdk which they include.

Try something like this,

$flysystemObj->getClient()->createSharableLink( $path )


// example using function createSharableLink
https://github.com/dropbox/dropbox-sdk-php/blob/master/examples/link.php

// source of createSharableLink
https://github.com/dropbox/dropbox-sdk-php/blob/f40c993fbf504bbb370b82c6c05cf633835261c9/lib/Dropbox/Client.php#L1022

// in the api docs
http://dropbox.github.io/dropbox-sdk-php/api-docs/v1.1.x/source-class-Dropbox.Client.html#1007