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PHP 5.3 以上版本，使用pthreads PHP扩展，可以使PHP真正地支持多线程。多线程在处理重复性的循环任务，能够大大缩短程序执行时间。
在liunx下的安装
准备工作:
1.下载Threading for PHP安装包https://github.com/krakjoe/pthreads
2.php安装包
php安装时一定要加上--enable-maintainer-zts参数 这个是安全线程
yum install php-devel php-pear httpd-devel
wget http://www.php.net/distributions/php-5.5.8.tar.gz
tar zxvf php-5.5.8.tar.gz
cd php-5.5.8.tar.gz
./configure --prefix=/usr/local/php --with-config-file-path=/etc --enable-maintainer-zts
make && make install
( make -j3 && make -j3 install) -> Faster building
cp php.ini-development /etc/php.ini
pecl install pthreads
提示错误
error: pthreads requires ZTS, please re-compile PHP with ZTS enabled
不对啊 我加了安全线程参数了 怎么还报错。。。
好像刚才用yum安装php-devel的时候安装了php
于是
yum remove php
重新编译在安装
pecl install pthreads
提示错误 ERROR: `phpize‘ failed
cd /usr/local/php/bin/
查看是否有phpize
发现有phpize,说明不是php-devel的问题
是安装扩展的方式出了问题，所以php安装是没有问题的
下载pthreads扩展包
unzip pthreads-master.zip
cd pthreads
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make && make install
提示Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-zts-20121212/
说明安装成功
修改php.ini文件,添加extension=pthreads.so
echo "extension=pthreads.so" >> /etc/php.ini
php -v
提示Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/pthreads.so‘ - /usr/lib64/php/modules/pthreads.so: cannot open shared object file: No such file or directory in Unknown on line 0
尼玛都没一件顺心的安装
错误 我擦
查看一下 /usr/local/php/include/php/main/php_config.php 里面是否有#define ZTS 1
里面有这个啊 我擦 这是什么问题呢 继续百度
重新安装一次试试看
cd php-5.5.8.tar.gz
./configure --prefix=/usr/local/php --with-config-file-path=/etc --enable-maintainer-zts
make -j3 && make -j3 install
cp php.ini-development /etc/php.ini
进入pthreads解压目录
cd ~/soft/pthreads-master
运行phpize脚本
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make && make install
提示安装成功
echo "extension=pthreads.so" >> /etc/php.ini
php -v
PHP Warning: PHP Startup: Unable to load dynamic library ‘/usr/lib64/php/modules/pthreads.so‘ - /usr/lib64/php/modules/pthreads.so: undefined symbol: core_globals_id in Unknown on line 0
尼玛还是同样的错误 不知道了
windows下多线程的使用
<?php 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 < 10; $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)."\n"; $t = microtime(true); foreach ($urls_array as $key => $value) { $result_new[$key] = model_http_curl_get($value["url"]); } $e = microtime(true); echo "For循环：".($e-$t)."\n"; ?>
多线程：5.1022920608521 For循环：20.272159099579
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原文地址：http://www.cnblogs.com/qiandu/p/4242223.html
