PHP threading call to a php function asynchronously
http://php.net/pthreads
http://docs.php.net/Thread
PHP certainly can support threading. Loading data from a SQL/NoSQL database in parallel is definitely a possibility. See the PHP manual, examples found in github and pecl packages, and a little bit more info on http://pthreads.org
Please note, the documentation did state that this is part of the core, this is ( my ) human error. You must install pthreads with a thread-safe version of php, it can be installed from pecl ( windows incuded, dlls @ http://windows.php.net/downloads/pecl/releases/pthreads ). Apologies.