title: Running several PHP processes in parallel
body: <p>We're working on a SEO related script in PHP, and we need to run different modules (each one of them are a file .php) at the same time once we finish with the crawling process. <strong>In other words, we need to execute more than 10 .php files, in parallel.</strong></p>
  
  <p>The application used to work with a sequence, so once when one script was ending, the user's browser was forwarded into the next one. Each one of the scripts is establishing a connection to the database, and sending different HTTP packets to the crawled web application.</p>
  
  <p>I understand that this could be approached using popen? Is there any way to receive information from each one of this modules into the main script that triggers them? Could anyone provide a very short snippet to see how this would work?</p>