PHP中是否有一种方法可以使HTTP调用不等待响应?我不关心响应,我只想做一些类似file_get_contents()的事情,但不等待请求完成后再执行其余的代码。这对于在我的应用程序中触发某种“事件”或触发长进程非常有用。
什么好主意吗?
PHP中是否有一种方法可以使HTTP调用不等待响应?我不关心响应,我只想做一些类似file_get_contents()的事情,但不等待请求完成后再执行其余的代码。这对于在我的应用程序中触发某种“事件”或触发长进程非常有用。
什么好主意吗?
当前回答
/**
* Asynchronously execute/include a PHP file. Does not record the output of the file anywhere.
*
* @param string $filename file to execute, relative to calling script
* @param string $options (optional) arguments to pass to file via the command line
*/
function asyncInclude($filename, $options = '') {
exec("/path/to/php -f {$filename} {$options} >> /dev/null &");
}
其他回答
swoole扩展。https://github.com/matyhtf/swoole PHP的异步并发网络框架。
$client = new swoole_client(SWOOLE_SOCK_TCP, SWOOLE_SOCK_ASYNC);
$client->on("connect", function($cli) {
$cli->send("hello world\n");
});
$client->on("receive", function($cli, $data){
echo "Receive: $data\n";
});
$client->on("error", function($cli){
echo "connect fail\n";
});
$client->on("close", function($cli){
echo "close\n";
});
$client->connect('127.0.0.1', 9501, 0.5);
您可以使用exec()来调用一些可以执行HTTP请求的东西,如wget,但必须将程序的所有输出指向某个地方,如文件或/dev/null,否则PHP进程将等待该输出。
如果你想把进程和apache线程完全分开,可以尝试这样做(我不确定,但我希望你能明白):
exec('bash -c "wget -O (url goes here) > /dev/null 2>&1 &"');
这不是一项很好的业务,您可能需要类似cron作业的东西来调用heartbeat脚本,该脚本轮询实际的数据库事件队列来执行真正的异步事件。
让我告诉你我的路。
需要在服务器上安装nodejs
(我的服务器发送1000个HTTPS请求只需要2秒)
url.php:
<?
$urls = array_fill(0, 100, 'http://google.com/blank.html');
function execinbackground($cmd) {
if (substr(php_uname(), 0, 7) == "Windows"){
pclose(popen("start /B ". $cmd, "r"));
}
else {
exec($cmd . " > /dev/null &");
}
}
fwite(fopen("urls.txt","w"),implode("\n",$urls);
execinbackground("nodejs urlscript.js urls.txt");
// { do your work while get requests being executed.. }
?>
urlscript.js >
var https = require('https');
var url = require('url');
var http = require('http');
var fs = require('fs');
var dosya = process.argv[2];
var logdosya = 'log.txt';
var count=0;
http.globalAgent.maxSockets = 300;
https.globalAgent.maxSockets = 300;
setTimeout(timeout,100000); // maximum execution time (in ms)
function trim(string) {
return string.replace(/^\s*|\s*$/g, '')
}
fs.readFile(process.argv[2], 'utf8', function (err, data) {
if (err) {
throw err;
}
parcala(data);
});
function parcala(data) {
var data = data.split("\n");
count=''+data.length+'-'+data[1];
data.forEach(function (d) {
req(trim(d));
});
/*
fs.unlink(dosya, function d() {
console.log('<%s> file deleted', dosya);
});
*/
}
function req(link) {
var linkinfo = url.parse(link);
if (linkinfo.protocol == 'https:') {
var options = {
host: linkinfo.host,
port: 443,
path: linkinfo.path,
method: 'GET'
};
https.get(options, function(res) {res.on('data', function(d) {});}).on('error', function(e) {console.error(e);});
} else {
var options = {
host: linkinfo.host,
port: 80,
path: linkinfo.path,
method: 'GET'
};
http.get(options, function(res) {res.on('data', function(d) {});}).on('error', function(e) {console.error(e);});
}
}
process.on('exit', onExit);
function onExit() {
log();
}
function timeout()
{
console.log("i am too far gone");process.exit();
}
function log()
{
var fd = fs.openSync(logdosya, 'a+');
fs.writeSync(fd, dosya + '-'+count+'\n');
fs.closeSync(fd);
}
class async_file_get_contents extends Thread{
public $ret;
public $url;
public $finished;
public function __construct($url) {
$this->finished=false;
$this->url=$url;
}
public function run() {
$this->ret=file_get_contents($this->url);
$this->finished=true;
}
}
$afgc=new async_file_get_contents("http://example.org/file.ext");
下面是一个工作示例,只需运行它,然后打开storage.txt,检查神奇的结果
<?php
function curlGet($target){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $target);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec ($ch);
curl_close ($ch);
return $result;
}
// Its the next 3 lines that do the magic
ignore_user_abort(true);
header("Connection: close"); header("Content-Length: 0");
echo str_repeat("s", 100000); flush();
$i = $_GET['i'];
if(!is_numeric($i)) $i = 1;
if($i > 4) exit;
if($i == 1) file_put_contents('storage.txt', '');
file_put_contents('storage.txt', file_get_contents('storage.txt') . time() . "\n");
sleep(5);
curlGet($_SERVER['HTTP_HOST'] . $_SERVER['SCRIPT_NAME'] . '?i=' . ($i + 1));
curlGet($_SERVER['HTTP_HOST'] . $_SERVER['SCRIPT_NAME'] . '?i=' . ($i + 1));