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).”
“;
?>

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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