PHP5.3以上版本使用pthreads PHP扩展真正支持多线程

class test_thread_run extends Thread

{

public $url;

public $data;

public function __construct($url)

{

$this->url = $url;

}

public function run()

{

if(($url = $this->url))

{

$this->data = model_http_curl_get($url);

}

}

}

function model_thread_result_get($urls_array)

{

foreach ($urls_array as $key => $value)

{

$thread_array[$key] = new test_thread_run($value["url"]);

$thread_array[$key]->start();

}

foreach ($thread_array as $thread_array_key => $thread_array_value)

{

while($thread_array[$thread_array_key]->isRunning())

{

usleep(10);

}

if($thread_array[$thread_array_key]->join())

{

$variable_data[$thread_array_key] = $thread_array[$thread_array_key]->data;

}

}

return $variable_data;

}

function model_http_curl_get($url,$userAgent=”")

{

$userAgent = $userAgent ? $userAgent : ‘Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2)’;

$curl = curl_init();

curl_setopt($curl, CURLOPT_URL, $url);

curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($curl, CURLOPT_TIMEOUT, 5);

curl_setopt($curl, CURLOPT_USERAGENT, $userAgent);

$result = curl_exec($curl);

curl_close($curl);

return $result;

}

for ($i=0; $i < 100; $i++)

{

$urls_array[] = array("name" => “baidu”, “url” => “http://www.baidu.com/s?wd=”.mt_rand(10000,20000));

}

$t = microtime(true);

$result = model_thread_result_get($urls_array);

$e = microtime(true);

echo “多线程：”.($e-$t).”

“;

$t = microtime(true);

foreach ($urls_array as $key => $value)

{

$result_new[$key] = model_http_curl_get($value["url"]);

}

$e = microtime(true);

echo “For循环：”.($e-$t).”

“;

?>

================

pthreads 安装error: pthreads requires ZTS,please re-compile PHP with ZTS enabled

研发的同事要求安装php pthread扩展！

tar zxvf pthreads-0.0.44.tgz

cd pthreads-0.0.44

/usr/local/webserver/php/bin/phpize

./configure –with-php-config=/usr/local/webserver/php/bin/php-config

##但在configure时却出错，提示：

configure: error: pthreads requires ZTS, please re-compile PHP with ZTS enabled

原因： 我在编译php的时候没有加入 –enable-maintainer-zts ，这个必须要重新编译php，不能动态加载的！

于是我重新编译了php，在原来的编译参数基础上那个加入了 –enable-maintainer-zts ，重新编译安装php即可！

make

make install

并在php.ini中加入：

extension_dir = “/usr/local/webserver/php/lib/php/extensions/no-debug-zts-20100525″ ##必须和你的目录相对应！

extension =pthreads.so

重启php服务！/etc/init.d/php-fpm restart