Re: Will PHP ever "grow up" and have threading?

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On 25 March 2010 20:09, Tommy Pham <tommyhp2@xxxxxxxxx> wrote:
> On Thu, Mar 25, 2010 at 12:02 PM, Peter Lind <peter.e.lind@xxxxxxxxx> wrote:
>> On 25 March 2010 19:37, Tommy Pham <tommyhp2@xxxxxxxxx> wrote:
>>> On Thu, Mar 25, 2010 at 3:55 AM, Per Jessen <per@xxxxxxxxxxxx> wrote:
>>>> Tommy Pham wrote:
>>>>
>>>>> On Thu, Mar 25, 2010 at 1:46 AM, Per Jessen <per@xxxxxxxxxxxx> wrote:
>>>>>>> * If you could implement threads and run those same queries in 2+
>>>>>>> threads, the total time saved from queries execution is 1/2 sec or
>>>>>>> more, which is pass along as the total response time reduced.  Is it
>>>>>>> worth it for you implement threads if you're a speed freak?
>>>>>>
>>>>>> Use mysqlnd - asynchronous mysql queries.
>>>>>>
>>>>>
>>>>> You're assuming that everyone in the PHP world uses MySQL 4.1 or
>>>>> newer.  What about those who don't?
>>>>
>>>> They don't get to use threading, nor asynchronous mysql queries.
>>>>
>>>> Come on, you're asking about a future feature in PHP 7.x , but would
>>>> like to support someone who is seriously backlevel on mysql??
>>>>
>>>>
>>>> --
>>>> Per Jessen, Zürich (16.9°C)
>>>>
>>>
>>> I'm not talking about MySQL 4.0 or older.  I'm talking about other
>>> RDBMS.  I think you should open your eyes a bit wider and take a look
>>> at the bigger picture (Firebird, MSSQL, Oracle, PostgreSQL, etc).
>>
>> http://www.php.net/manual/en/function.pg-send-query.php
>>
>> Looks to me like the PHP postgresql library already handles that. Not
>> to mention: you're not presenting an argument for threads, you're
>> presenting an argument for implementing asynchronous queries in the
>> other DBMS libraries.
>>
>> Of course, the problem could also be solved by introducing threads in
>> PHP. I'd personally guess modifying DBMS libraries would be less
>> costly, but as I haven't been involved in writing the PHP code my
>> guess isn't worth much.
>>
>> Regards
>> Peter
>>
>
> I'm presenting the argument for threading.  Per is presenting the work
> around using asynchronous queries via mysqlnd.  I did read that link a
> few days ago, "Although the user can send multiple queries at once,
> multiple queries cannot be sent over a busy connection. If a query is
> sent while the connection is busy, it waits until the last query is
> finished and discards all its results."  Which sounds like threads ->
> multiple connections to not run into that problem.
>

Have you looked into what it would cost in development to improve the
library? Have you compared that to the cost in development to
introduce threads into PHP? No, I don't think you're presenting the
argument for threading - but I don't expect you to see it that way.

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