Or, rather, please, please, please don't follow advice from 2007 on clever PHP hacks. That's a recipe for trouble in any circumstances, and even more so in case

Or, rather, please, please, please don't follow advice from 2007 on clever PHP hacks. That's a recipe for trouble in any circumstances, and even more so in case of the (buggy) attempts at concurrency present in PHP5. It is now a decade later, there are other tools (PHP version seven has been released, ffs).