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This article mainly introduces PHP multi-threading. Interested friends can refer to it. I hope it will be helpful to everyone.
PHP 5.3 and above, using the pthreads PHP extension, can make PHP truly support multi-threading.
Multiple threads can greatly shorten program execution time when processing repetitive cyclic tasks.
PHP extension download: https://github.com/krakjoe/pthreads
PHP manual document: http://php.net/manual/zh/book.pthreads.php
1. Extension compilation Install (Linux), edit the parameter –enable-maintainer-zts is a required option:
'./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
Add
extension = "pthreads.so"
2. Give a PHP multi-threading and For loop to capture the Baidu search page PHP code example:
<?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"; ?>
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