php多线程thread开发与应用的例子

Php多线程的使用，首先需要PHP5.3以上版本，并安装pthreads PHP扩展，可以使PHP真正的支持多线程，扩展如何安装请自行百度

PHP扩展下载：https://github.com/krakjoe/pthreads

PHP手册文档：http://php.net/manual/zh/book.pthreads.php

在安装好扩展之后，就可以运用多线程了，下面贴个通过搜索结果抓取百度网盘内容的代码：

<?php

include 'include/CurlLoad.class.php'; // 引入读取库

/**

 * 多线程抓取内容

 * @param array $url 待抓取URL列表集合

 * @return 成功返回指定内容，失败返回NULL

 */

function vget($url) {

 $ret = BaiduSRLinksGet ( $url, 1 ); // 获取结果列表地址

 if ($ret != null) {

  if (array_key_exists ( "links", $ret )) {

   $infos = array ();

   $number = count ( $ret ['links'] );

   for($i = 0; $i < $number; $i ++) {//循环创建线程对象

    $thread_array [$i] = new baidu_thread_run ( $ret ['links'] [$i] );

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

   }

   foreach ( $thread_array as $thread_array_key => $thread_array_value ) {//检查线程是否执行结束

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

     usleep ( 10 );

    }

    if ($thread_array [$thread_array_key]->join ()) {//如果执行结束，取出结果

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

     if ($temp != null)

      $infos ['res'] [] = $temp;

    }

   }

   $infos ['pages'] = $ret ['pages'];

   $infos ['status'] = "1";

  } else

  $infos = null;

 } else

  $infos = null;

 return $infos;

}

/**

 * 获取百度搜索结果列表URL

 *

 * @param string $url

 *         搜索结果页URL

 * @param int $format

 *         默认$format=0，获取默认地址；$format=1获取跳转后真实地址

 * @return NULL multitype:array()

 */

function BaiduSRLinksGet($url, $format = 0) {

 $html = CurlLoad::HtmlGet ( $url ); // 获取页面

 if ($html == null)

  return null;

 try {

  preg_match_all ( "/"url":"(?<links>.*)"}/", $html, $rets ); // 搜索结果链接筛选

  if (! array_key_exists ( 'links', $rets )) // 如果数组中不包含Links键名，表示获取失败

   return null;

  $ret = array ();

  if ($format == 1) {

   $number = count ( $rets ['links'] );

   for($i = 0; $i < $number; $i ++) {

    $headr_temp = CurlLoad::Get_Headers ( $rets ['links'] [$i], 1 ); // 通过headr获取真实地址

    if (array_key_exists ( "Location", $headr_temp ))

     $ret ['links'] [$i] = $headr_temp ['Location'];

    else

     $ret ['links'] = $rets ['links'];

   }

  } else

   $ret ['links'] = $rets ['links'];

  preg_match_all ( '/href="?/s?wd=site%3Apan.baidu.com%20(?<url>.+?)&ie=utf-8">/', $html, $out );

  unset ( $out ['url'] [0] );

  $number = count ( $out ['url'] );

  for($i = 1; $i < $number; $i ++) {

   preg_match_all ( '/&pn=(.*)/', $out ['url'] [$i], $temp );

   $ret ['pages'] [$temp [1] [0] / 10] = base64_encode ( $out ['url'] [$i] );

  }

  return $ret;

 } catch ( Exception $e ) {

  WriteLog ( $e );

  return null;

 }

}

/**

 * 百度网盘资源信息获取

 *

 * @param string $url

 *         网盘资源页URL

 * @return NULL array

 */

function PanInfoGet($url) {

 $html = CurlLoad::HtmlGet ( $url ); // 获取页面

 if ($html == null)

  return null;

 try {

  if (preg_match_all ( "/文件名:(?<name>.*) 文件大小:(?<size>.*) 分享者:(?<user>.*) 分享时间:(?<date>.*) 下载次数:(?<number>[0-9]+)/", $html, $ret ) == 0)

   return null;

  $rets ['name'] = $ret ['name'] [0];

  $rets ['size'] = $ret ['size'] [0];

  $rets ['user'] = $ret ['user'] [0];

  $rets ['date'] = $ret ['date'] [0];

  $rets ['number'] = $ret ['number'] [0];

  $rets ['link'] = $url;

  return $rets;

 } catch ( Exception $e ) {

  WriteLog ( $e );

  return null;

 }

}

function WriteLog($str) {

 $file = fopen ( "../error.log", "a+" );

 fwrite ( $file, "Warning:" . date ( "Y/m/d H:i:s" ) . ":" . $str . "rn" );

 fclose ( $file );

}

/**

 * 多线程抓取对象

 * @author MuXi

 *

 */

class baidu_thread_run extends Thread {

 public $url;

 public $data;

 public function __construct($url) {

  $this->url = $url;

 }

 public function run() {

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

   $this->data = PanInfoGet ( $url );//线程执行方法

  }

 }

}

?>