Article to organize two PHP multithreading, one is to imitate the multi-threaded Java, the other is the use of curl to achieve multi-line program collection of pictures, let's look at the following together.
Through the Web server to implement the PHP multithreading function.
Of course, people who have a deep understanding of multithreading know that multithreading can only mimic the effects of multithreading through Web servers, not the real multi-threading.
However, it can still meet some of our needs, in the need for similar features such as multithreading can still use this class.
| The code is as follows |
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/**
* @title: PHP multithreaded Class (thread)
* @version: 1.0
* @author: phper.org.cn < web@phper.org.cn >
* @published: 2010-11-2
*
* PHP Multithreaded Application Example:
* require_once ' thread.class.php ';
* $thread = new Thread ();
* $thread->addthread (' Action_log ', ' a ');
* $thread->addthread (' Action_log ', ' B ');
* $thread->addthread (' Action_log ', ' C ');
* $thread->runthread ();
*
* Function Action_log ($info) {
* $log = ' log/'. Microtime (). '. log ';
* $txt = $info. "Rnrn". ' Set in '. Date (' H:i:s ', Time ()). (double) microtime (). "RN";
* $fp = fopen ($log, ' w ');
* Fwrite ($FP, $txt);
* Fclose ($FP);
* }
*/
Class Thread {
var $hooks = array ();
var $args = array ();
function Thread () {
}
function Addthread ($func)
{
$args = Array_slice (Func_get_args (), 1);
$this->hooks[] = $func;
$this->args[] = $args;
return true;
}
function Runthread ()
{
if (Isset ($_get[' flag '))
{
$flag = intval ($_get[' flag ');
}
if ($flag | | $flag = = = 0)
{
Call_user_func_array ($this->hooks[$flag], $this->args[$flag]);
}
Else
{
for ($i = 0, $size = count ($this->hooks); $i < $size; $i + +)
{
$fp =fsockopen ($_server[' http_host '],$_server[' server_port ');
if ($FP)
{
$out = "GET {$_server[' php_self ']}?flag= $i http/1.1rn";
$out. = "Host: {$_server[' http_host ']}rn";
$out. = "Connection:closernrn";
Fputs ($fp, $out);
Fclose ($FP);
}
}
}
}
} |
How to use:
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$thread = new Thread ();
$thread->addthread (' func1 ', ' info1 ');
$thread->addthread (' Func2 ', ' Info2 ');
$thread->addthread (' func3 ', ' Info3 ');
$thread->runthread (); |
Description
Addthread () is the addition of a thread function, the first argument is the function name, and the following argument (optional) is the argument passed to the specified function.
Runthread () is a function that executes a thread.
Example 2. Using curl to achieve multi-threaded download pictures
In fact, PHP using curl implementation of a multi-threaded class, with this class, we can also use this class to perform multi-threaded tasks!
| The code is as follows |
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Class curl_multi{
Private $url _list=array ();
Private $curl _setopt=array (
' Curlopt_returntransfer ' = 1,//results returned to the variable
' Curlopt_header ' = 0,//whether to return HTTP headers
' Curlopt_nobody ' = 0,//If you need to return content
' Curlopt_followlocation ' + 0,//automatic tracking
' Curlopt_timeout ' = 6//time-out (s)
);
function __construct ($seconds =30) {
Set_time_limit ($seconds);
}
/*
* Set URL
* @list Array
*/
Public Function Seturllist ($list =array ()) {
$this->url_list= $list;
}
/*
* Set parameters
* @cutPot Array
*/
Public Function setopt ($cutPot) {
$this->curl_setopt= $cutPot + $this->curl_setopt;
}
/*
* Implementation
* @return Array
*/
Public Function execute () {
$MH =curl_multi_init ();
foreach ($this->url_list as $i = + $url) {
$conn [$i]=curl_init ($url);
foreach ($this->curl_setopt as $key = + $val) {
curl_setopt ($conn [$i],preg_replace ('/(Curlopt_w{1,})/ie ', ' $ A ', $key), $val);
}
Curl_multi_add_handle ($MH, $conn [$i]);
}
$active =false;
do{
$MRC =curl_multi_exec ($MH, $active);
}while ($MRC = = Curlm_call_multi_perform);
while ($active and $MRC = = CURLM_OK) {
if (Curl_multi_select ($MH)! =-1) {
do{
$MRC =curl_multi_exec ($MH, $active);
}while ($MRC = = Curlm_call_multi_perform);
}
}
$res =array ();
foreach ($this->url_list as $i = + $url) {
$res [$i]=curl_multi_getcontent ($conn [$i]);
Curl_close ($conn [$i]);
Curl_multi_remove_handle ($MH, $conn [$i]);//Release resources
}
Curl_multi_close ($MH);
return $res;
}
} |
PHP uses multi-threaded Download class example: Download remote picture
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$curl _mul=new Curl_multi ();
$curl _mul->seturllist (Array (' http://www.bKjia.c0m/img/logo.jpg ', ' http://www.bKjia.c0m/img/logo.jpg ', ' http:/ /www.bkjia.c0m/img/logo.jpg '));
$a = $curl _mul->execute ();
$i = 1;
foreach ($a as $v) {
$filename = $i. '. gif ';
$FP 2= @fopen ($filename, ' a ');
Fwrite ($fp 2, $v);
Fclose ($fp 2);
$i + +;
}
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