Who can develop a site similar to onehourtranslation dot com with wordpress or any other PHP script? I need a similar site, but I will run it in China, however multi-language is required.
I'm sure there are many of us who can. If you want a discussion about our capabilities or the skills needed to undertake such a project then you've come to the right place - however if you are actually trying to hire someone for the job then you need to pop over to https://forums.digitalpoint.com/forums/programming.103/ and find someone selling their programming skills and services
Wordpress is useless for sites like onehourtranslation. If you really want to create the similar site - it'll be better for you to start from creating detailed specification.