本篇文章主要介绍PHP多线程，感兴趣的朋友参考下，希望对大家有所帮助。
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。
PHP扩展下载：https://github.com/krakjoe/pthreads
PHP手册文档：http://php.net/manual/zh/book.pthreads.php
1、扩展的编译安装(Linux），编辑参数 –enable-maintainer-zts 是必选项：
'./configure' '--prefix=/usr/local/webserver/php' '--with-config-file-path=/usr/local/webserver/php/etc' '--with-apxs2=/usr/local/webserver/httpd/bin/apxs' '--with-libxml-dir=/usr/local/webserver/libxml2' '--with-mysql=/usr/local/webserver/mysql' '--with-mysqli=/usr/local/webserver/mysql/bin/mysql_config' '--enable-soap' '--enable-sockets' '--with-curl' --enable-maintainer-ztsmake clean make make install unzip pthreads-master.zip cd pthreads-master /usr/local/webserver/php/bin/phpize ./configure --with-php-config=/usr/local/webserver/php/bin/php-config
makemake install
vi /usr/local/webserver/php/etc/php.ini
添加
extension = "pthreads.so"
2、给出一段PHP多线程、与For循环，抓取百度搜索页面的PHP代码示例：
<?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);
}
}
}<?php
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)."\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";
?>相关推荐：
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