Comments on: Improved Thread Simulation Class for PHP

By: Rick

Rick — Fri, 07 Jan 2011 01:09:00 +0000

Great Function; Thanks So Much For Sharing This! I Ran Into A Problem With Trying To Pass A Multidimensional Array To ‘create_thread’. Using ‘call_user_func’ Instead of ‘var_export’ And ‘eval’ Fixed It.

ARRAY:
$user_array = array(array(“first_name” => “Rick”, “last_name” = “Smith”), “id” => 1);

CALL:
$manager->create_thread(‘ping’, $user_array);

ARRAY AFTER BEING PASSED TO FUNCTION USING var_export & eval
Array
(
[0] => Array
(
[first_name] => Rick
[last_name] => Smith
)
)

ARRAY AFTER BEING PASSED TO FUNCTION USING call_user_func
Array
(
[0] => Array
(
[first_name] => Rick
[last_name] => Smith
)

[id] => 1
)

I Just Made The Following Change To The ‘thread.php’:

//eval($code);
$return = call_user_func($_POST['f'], $_POST['a']);

By: White Shadow

White Shadow — Thu, 02 Sep 2010 12:10:08 +0000

If you like, you can post your patch here and I’ll add it to the script.

By: Andy

Andy — Thu, 02 Sep 2010 09:17:53 +0000

Followup: This has been VERY useful, now I can run parallel search queries in my Store system (4 million products) and reduced search time by a factor of 3.

But the script had to be patched… specifically the preg_match for [RESPONSE][/RESPONSE] breaks frequently on serialized data. I think it breaks on serialized Arrays because it does work perfectly on String data. Or maybe its because my Arrays contain all sorts of “special” characters e.g. singlequotes, doublequotes and non-ascii characters.

I copied the encoded string to a test file tested the preg_match on the file. I also tested with different opening/closing tags… and its confirmed that preg_match indeed DOES break. Its a PHP bug, not something todo with this script.

I have now replaced the preg_match with code which uses strpos() and substr() and it work perfectly now.

By: Andy

Andy — Mon, 30 Aug 2010 10:27:00 +0000

Doesn’t require domain to be specified….requires a minor change in create_thread() and works with any host, local or domain

function create_thread($func, $arguments=null, $id=null)
$host = $_SERVER ['SERVER_NAME'];
$port = 80;
…..

Though it works, I didn’t really understand the mechanism… I mean why doesn’t create_thread() create new threads when the script is sent a Post request and end up in a recursive never-ending loop

By: White Shadow

White Shadow — Wed, 02 Sep 2009 09:14:31 +0000

Looks like the script incorrectly determines the current URL. Take a look at the constructor of the Thread class + the Thread->start() method and see if anything looks wrong to you. Also, you might need to explicitly specify the domain name when creating a thread.

By: Bob

Bob — Tue, 01 Sep 2009 18:53:17 +0000

I have this working fine on my workstation using XAMPP but when I publish to my production Apache server I get the following

Decoding error! The response was : HTTP/1.1 404 Not Found Date: Tue, 01 Sep 2009 18:47:57 GMT Server: Apache/2.0.63 (Unix) mod_ssl/2.0.63 OpenSSL/0.9.7a mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.5 Accept-Ranges: bytes Connection: close Transfer-Encoding: chunked Content-Type: text/html 1 1 95
16 404 Not Found

43 The server can not find the requested page:

9 localhost 17 /multithread.php (port 41 80)

Please forward this error screen to 21 localhost’s WebMaster.

By: Lightweight and multiplatform PHP Multithreading Engine | Anton Vedeshin

Lightweight and multiplatform PHP Multithreading Engine | Anton Vedeshin — Fri, 03 Jul 2009 11:24:16 +0000

[...] http://www.phpclasses.org/browse/package/3953.html [14] Improved Thread Simulation Class for PHP http://w-shadow.com/blog/2008/05/24/improved-thread-simulation-class-for-php/ Author: Anton Vedeshin Categories: Articles Tags: Distributed Computing, PHP Comments (0) [...]

By: johnitunes

johnitunes — Sat, 07 Mar 2009 08:12:33 +0000

Yo!
How are you doing?
I am new at w-shadow.com and thought I would say HI
I hope I can become a contributing member!
Oh yeah… because the economy is so corrupt right now.. I cant afford music.. lol
Anyone know where I can get free itunes gift cards online?
Sorry if this is in wrong section admin.. wasnt sure of the right place.

Thank You!!

By: White Shadow

White Shadow — Fri, 13 Feb 2009 10:35:50 +0000

Okay, I fixed some of those bugs.

By: NikoRoberts

NikoRoberts — Fri, 13 Feb 2009 05:53:12 +0000

You have to replace “localhost” in the create_thread function to get rid of the decoding error (Line 287)

Also the “emtpy” should be “empty” on line 40

Hope this help anyone in the future.

Other than that it is great code.

Thanks!