How to multi-thread in php
PHP开启多线程的方法
php如何安装pthreads的拓展的,我采用的是windows安装,我本机的开发环境是phpstudy。
有几点特别需要注意,在window中此类拓展一定是要在线程安全(ts)的php版本中运行。
安装
1、复制php_pthreads.dll 到目录 bin\php\ext\
2、复制pthreadVC2.dll 到目录 C:\windows\system32 下面。
3、打开php配置文件php.ini,在后面加上extension=php_pthreads.dll。
提示!
Windows系统需要将 pthreadVC2.dll 所在路径加入到 PATH 环境变量中。我的电脑--->鼠标右键--->属性--->高级--->环境变量--->系统变量--->找到名称为Path的--->编辑--->在变量值最后面加上pthreadVC2.dll的完整路径。
测试
测试脚本我复制的是http://zyan.cc/pthreads/这里的实例代码。
这里我贴上我的代码,就是在子线程中我添加了日志记录,判断下他的返回值如何
<?php set_time_limit(0); class test_thread_run extends Thread { public $url; public $data='init'; public function __construct($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); if($result=== false){ $result = curl_error($curl); } curl_close($curl); $pid = Thread::getCurrentThreadId(); $file='D:\\pid\\'.$pid.'p.txt'; file_put_contents($file,$result); 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-$t)."\n"; //print_r($result); $t = microtime(true); foreach ($urls_array as $key => $value) { $result_new[$key] = model_http_curl_get($value["url"]); } $e = microtime(true); echo "For循环:".($e-$t)."\n"; //print_r($result_new); ?>
结果在我的目录下:
里面的文本内容是:
也就是说子线程是正常调度了,但是没有拿到数据。此类情况可能是我的网速的原因,垃圾8M电信。
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