环境CentOS 6.3 64bit，php 5.4.5
pthreads需要线程安全环境，
下载php的安装包，解压：
tar zxvf php-5.4.5.tar.gz//名字是不是这个我不确定，自己去下载
安装：
./configure --enable-zts --prefix=/usr/local/php-zts //或者 --enable-maintainer-zts
make
make install
结果就把线程安装版的php安装到了/usr/local/php-zts，目前我不了解开启线程安全到底会带来什么影响，所以，就弄两个测试版本。
如果遇到undefined reference to `executor_globals_id'
make clean就可以了
下载和安装pthreads:
tar zxvf pthreads
cd pthreads-0.0.45 // 本文的是第一个stable版本
/usr/local/php-zts/bin/phpize
./configure --with-php-config=/usr/local/php-zts/bin/php-config
make
make install
/usr/local/php-zts/bin/php -i|grep "php.ini"
找出php.ini的位置，修改它把ext=pthreads.so加入进入进去，因为我原来就有php，现在新装的php.ini文件不存在我就考了一个过去……
pthreads-0.0.45/examples目录下有些示例文件，比文档有用，在线文档根本不能说明问题，我修改了一个，执行了一下：
<?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
发个全点儿的php编译参数：
./configure
--prefix=/usr/local/php-zts
--enable-sockets
--enable-pcntl
--enable-maintainer-zts
--enable-sysvmsg
--enable-mbstring
--with-mysql=/usr
--with-mysql-sock=/var/lib/mysql/mysql.sock
--with-mysqli=/usr/lib64/mysql/mysql_config
--with-pdo-mysql=/usr/lib64/mysql/mysql_config/configure
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