async web calls php
<p>I have a db with over 5 million rows and for each row i have to do a http post to a server with some parameters at  maximum rate of 500 connections. each post request takes 12 secs to process. so as old connections are completed i have to do new ones and maintain ~500 connection. I have to then update DB with values returned from these webcalls.
How do I make the webcalls as above?</p>

<p>My App is in PHP. Can I use PHP or should I switch to something else for this.</p>
