PHP 多线程扩展（正儿八经的线程）pthr_php

    <?php   /*  * Sharing symbols 101  * @NOTE Thread::fetch was never included in a release and was superceeded by object handlers  *   pthreads allows read access to thread data from any context      pthreads allows write access to thread data from any context      carry on reading ...      work in progress ...  */   class TestObject {       public $val;   }      class Fetching extends Thread {       public function run(){           /*          * of course ...          */           $this->sym = 10245;           $this->arr = array(               "1", "2", "3"           );           echo '6'.chr(10);           /*          * objects do work, no preparation needed ...          * read/write objects isn't finalized ..          * so do the dance to make it work ...          */           $obj = new TestObject();           $obj->val = "testval";           $this->obj = $obj;           echo '7'.chr(10);           /*          * will always work          */           $this->objs = serialize($this->obj);           echo '8'.chr(10);           /*          * nooooooo          */           $this->res = fopen("php://stdout", "w");           echo '9'.chr(10);           /*          * tell the waiting process we have created symbols and fetch will succeed          */           $this->synchronized(function(){               $this->notify();           });           echo '10'.chr(10);           /* wait for the process to be finished with the stream */           $this->synchronized(function(){               $this->wait();           });           echo '11'.chr(10);       }   }   echo '0'.chr(10);   $thread = new Fetching();   echo '1'.chr(10);   $thread->start();   //sleep(1); 加了这个就不能正常工作，真奇怪   echo '2'.chr(10);   $thread->synchronized(function($me){       echo '3'.chr(10);       $me->wait();       echo '4'.chr(10);   }, $thread);   echo '5'.chr(10);      /*  * we just got notified that there are symbols waiting  */   foreach(array("sym", "arr", "obj", "objs", "res") as $symbol){       printf("/$thread->%s: ", $symbol);          $fetched = $thread->$symbol;       if ($fetched) {           switch($symbol){               /*              * manual unserialize              */               case "objs":                   var_dump(unserialize($fetched));               break;                              default: var_dump($fetched);           }       }       printf("/n");   }      /* notify the thread so it can destroy resource */   $thread->synchronized(function($me){       $me->notify();   }, $thread);   ?>    /usr/local/php-zts/bin/php Fetch.php  结果：  0 1 2 3 6 7 8 9 10 4 5 $thread->sym: int(10245)   $thread->arr: array(3) {   [0]=>   string(1) "1"   [1]=>   string(1) "2"   [2]=>   string(1) "3" }   $thread->obj: object(TestObject)#2 (1) {   ["val"]=>   string(7) "testval" }   $thread->objs: object(TestObject)#2 (1) {   ["val"]=>   string(7) "testval" }   $thread->res: resource(3) of type (stream)   11