Use of PHP multi-threading_PHP tutorial

The performance bottleneck of most websites is not on the PHP server, because it can be easily dealt with by simply increasing the number of servers or CPU cores horizontally (for various cloud hosts, it is more convenient to increase the number of VPS or CPU cores, and increase it directly with a backup image VPS, even the operating system and environment do not need to be installed and configured), but lie in the MySQL database. If you use a MySQL database and a joint query SQL, you may be able to handle the business logic. However, if you encounter a large number of concurrent requests, you will stop working. If you use a NoSQL database, it may take ten queries to process the same business logic, but each query is faster than MySQL. Ten loop NoSQL queries may be faster than a MySQL joint query, which can handle tens of thousands of times/second. The query is totally fine. If you add PHP multi-threading, query NoSQL through ten threads at the same time, and return the result summary output, the speed will be faster. In our actual APP product, we call a PHP interface that recommends products in real time based on user preferences. PHP needs to initiate 500 to 1,000 queries to the BigSea NoSQL database to calculate the user's personalized preference product data in real time. The role of PHP multi-threading is very obvious.

PHP extension download: https://github.com/krakjoe/pthreads
PHP manual document: http://php.net/manual/zh/book.pthreads.php

Implementation of PHP multi-threading

Extended compilation and installation (Linux), the editing parameter --enable-maintainer-zts is required:

cd /Data/tgz/php-5.5.1
./configure --prefix=/Data/apps/php --with-config-file-path=/Data/apps/php/etc --with-mysql=/Data/apps/mysql --with-mysqli=/ Data/apps/mysql/bin/mysql_config --with-iconv-dir --with-freetype-dir=/Data/apps/libs --with-jpeg-dir=/Data/apps/libs --with-png- dir=/Data/apps/libs --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem -- enable-inline-optimization --with-curl --enable-mbregex --enable-fpm --enable-mbstring --with-mcrypt=/Data/apps/libs --with-gd --enable-gd-native- ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --enable-opcache --with-pdo-mysql -- enable-maintainer-zts
make clean
make
make install

unzip pthreads-master.zip
cd pthreads-master
/Data/apps/php/bin/phpize
./configure --with-php-config=/Data/apps/php/bin/php-config
make
make install

vi /Data/apps/php/etc/php.ini
Add:
extension = "pthreads.so"

Give a PHP multi-threading and For loop to capture the PHP code example of Baidu search page

​

2. class test_thread_run extends Thread
3. { 
4.        public $url;                                   
       public $data;                                   
6. Public function __construct($url)
7.                                                                       
             $this->url = $url;                                   
8.          } 
10. Public function run()
11.                                                                        
If(($url = $this->url))
                                                                 
13.                    $this->data = model_http_curl_get($url);                                     
                                                                                                           
14.         } 
15. } 
17. function model_thread_result_get($urls_array)
18. { 
19. foreach ($urls_array as $key => $value)
20.                                                                       
          $thread_array[$key] = new test_thread_run($value["url"]);
$thread_array[$key]->start();
        } 
foreach ($thread_array as $thread_array_key => $thread_array_value)
                                                                      
26. ​​​​​while($thread_array[$thread_array_key]->isRunning())
27.                                                                  
usleep(10);
                                                                                                           
29. If($thread_array[$thread_array_key]->join())
30.                                                                  
               $variable_data[$thread_array_key] = $thread_array[$thread_array_key]->data;
                                                                                                             
32.          } 
33. Return $variable_data;
34. }  
35.   
36.   function model_http_curl_get($url,$userAgent="")   
37.   {  
38.       $userAgent = $userAgent ? $userAgent : 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2)';   
39.       $curl = curl_init();  
40.       curl_setopt($curl, CURLOPT_URL, $url);  
41.       curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);  
42.       curl_setopt($curl, CURLOPT_TIMEOUT, 5);  
43.       curl_setopt($curl, CURLOPT_USERAGENT, $userAgent);  
44.       $result = curl_exec($curl);  
45.       curl_close($curl);  
46.       return $result;  
47.   }  
48.   
49.   for ($i=0; $i < 100; $i++)   
50.   {   
51.       $urls_array[] = array("name" => "baidu", "url" => "http://www.baidu.com/s?wd=".mt_rand(10000,20000));  
52.   }  
53.   
54.   $t = microtime(true);  
55.   $result = model_thread_result_get($urls_array);  
56.   $e = microtime(true);  
57.   echo "多线程：".($e-$t)."n";  
58.   
59.   $t = microtime(true);  
60.   foreach ($urls_array as $key => $value)   
61.   {  
62.       $result_new[$key] = model_http_curl_get($value["url"]);  
63.   }  
64.   $e = microtime(true);  
65.   echo "For循环：".($e-$t)."n";  
66. ?>  

原文：http://blog.s135.com/pthreads/  张宴

http://www.bkjia.com/PHPjc/739145.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/739145.htmlTechArticle大多数网站的性能瓶颈不在PHP服务器上，因为它可以简单地通过横向增加服务器或CPU核数来轻松应对（对于各种云主机，增加VPS或CPU核数就...