Or, rather, <i>please, please, please</i> don&#x27;t follow advice from 2007 on <i>clever</i> PHP hacks. That&#x27;s a recipe for trouble in any circumstances, and even more so in case of the (buggy) attempts at concurrency present in PHP5.<p>It is now a decade later, there are other tools (PHP version <i>seven</i> has been released, ffs).