arrays - PHP - Multiple instances of script accessing same resources -

i have analyze lot of information. speed things i'll running multiple instances of same script @ same moment.

however there big chance scripts analyze same piece of information(duplicate) not slow down process.

if running 1 instance solve problem array(i save has been analyzed).

so have question how somehow sync array other "threads" ?

mysql option guess overkill? read memory sharing not sure if solution looking for.

so if has suggestions let me know.

regards

this trivial task using real multi-threading:

<?php /* want logs readable creating mutex output */ define ("log", mutex::create()); /* thread safe printf */ function slog($message, $format = null) {     $format = func_get_args();     if ($format) {         $message = array_shift($format);          if ($message) {             mutex::lock(log);             echo vsprintf(                 $message, $format);             mutex::unlock(log);         }     } }  /* pthreads descendant */ class s extends stackable {     public function run(){} }  /* thread manipulates shared data until it's gone */ class t extends thread {     public function __construct($shared) {         $this->shared = $shared;     }     public function run() {         /* use ::chunk if wanted bite off bit more work */         while (($next = $this->shared->shift())) {             slog(                 "%lu working item #%d\n", $this->getthreadid(), $next);         }     } }  $shared = new s(); /* fill dummy data */ while (@$o++ < 10000) {     $shared[]=$o; }  /* start threads */ $threads = array(); while (@$thread++ < 5) {     $threads[$thread] = new t($shared);     $threads[$thread]->start(); }  /* join threads */ foreach ($threads $thread)     $thread->join();  /* important; ::destroy ::create */ mutex::destroy(log); ?> 

the slog() function isn't required use case, thought useful show executable example readable output.

the main gist of multiple threads need reference common set of data manipulate data ...