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Re: [bang-phpug] Re: Multithreading in php

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  • vaijanath rao
    Hi Amit, PHP might not support multi-thread but you can use fork to create as many as childs as you want and than wait for the signal from the child. --Thanks
    Message 1 of 9 , Jan 4, 2008
      Hi Amit,

      PHP might not support multi-thread but you can use fork to create as many as childs as you want and than wait for the signal from the child.

      --Thanks and Regards
      Vaijanath

      ----- Original Message ----
      From: Amit Rana <amitrana77@...>
      To: bang-phpug@yahoogroups.com
      Sent: Friday, 4 January, 2008 11:11:53 AM
      Subject: [bang-phpug] Re: Multithreading in php













      Hi,

      Yes, there is no multi threading support in php but if you want to

      start a parallel process you can curl (or start another http

      request). Also depends what you want to do, getting content via ajax

      is also a 'kind of' multi threading.



      On the server side if you are doing curl, dis advantage is that you

      there is no way to inform the main thread about success/failure of

      the child thread (if you dont want to wait).



      HTH



      --- In bang-phpug@yahoogro ups.com, "pinky_goyal22" <pinks.forums@ ...>

      wrote:

      >

      > Hi All!

      >

      > does any one have idea about multi threading in php ???

      > i have googled for the topic but didn't get much except php doesn't

      > support multithreading.

      >

      > if any one have idea about it or have some good link please provide

      me

      > that.

      >

      > thanks in advance.

      >

      > pinky

      >














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    • Anand Subramanian
      Can one of you send a few more detials on this. We are also trying to spawn multiple processes to accomplish something that takes many hours. (copying files
      Message 2 of 9 , Jan 4, 2008
        Can one of you send a few more detials on this. We are also trying to spawn multiple processes to accomplish something that takes many hours. (copying files from another server). Any information will help.

        thanks

        anand

        ----- Original Message ----
        From: vaijanath rao <vaiju1981@...>
        To: bang-phpug@yahoogroups.com
        Cc: amitrana77@...; Vaijanath Rao <vaiju1981@...>
        Sent: Friday, January 4, 2008 7:24:48 PM
        Subject: Re: [bang-phpug] Re: Multithreading in php














        Hi Amit,



        PHP might not support multi-thread but you can use fork to create as many as childs as you want and than wait for the signal from the child.



        --Thanks and Regards

        Vaijanath



        ----- Original Message ----

        From: Amit Rana <amitrana77@yahoo. com>

        To: bang-phpug@yahoogro ups.com

        Sent: Friday, 4 January, 2008 11:11:53 AM

        Subject: [bang-phpug] Re: Multithreading in php



        Hi,



        Yes, there is no multi threading support in php but if you want to



        start a parallel process you can curl (or start another http



        request). Also depends what you want to do, getting content via ajax



        is also a 'kind of' multi threading.



        On the server side if you are doing curl, dis advantage is that you



        there is no way to inform the main thread about success/failure of



        the child thread (if you dont want to wait).



        HTH



        --- In bang-phpug@yahoogro ups.com, "pinky_goyal22" <pinks.forums@ ...>



        wrote:



        >



        > Hi All!



        >



        > does any one have idea about multi threading in php ???



        > i have googled for the topic but didn't get much except php doesn't



        > support multithreading.



        >



        > if any one have idea about it or have some good link please provide



        me



        > that.



        >



        > thanks in advance.



        >



        > pinky



        >



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      • Amit Rana
        Hi Vaijnath, Thats what I meant, php as a language doesn t support muti threading there are ways to do it curl being one, fork being other, depends on what
        Message 3 of 9 , Jan 7, 2008
          Hi Vaijnath,

          Thats what I meant, php 'as a language' doesn't
          support muti threading there are ways to do it curl
          being one, fork being other, depends on 'what' you
          want to do.

          Anand,
          What exactly do you want to do? keep a web page open
          (maintain session) for hours while your background
          process finishes?
          Can you share your application flow?

          Regards,
          Amit.


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        • Anand Subramanian
          Here is my application flow. There is no UI involved. We have a PHP program that reads an xml file (normally containing 5000+ records). Each of the record can
          Message 4 of 9 , Jan 8, 2008
            Here is my application flow. There is no UI involved.
            We have a PHP program that reads an xml file (normally containing 5000+ records).
            Each of the record can contain one or more links for photos. The photos are stored in a diff server/diff domain.
            Our php program. will read the records, insert into db (this gets done pretty fast)
            Then it copies the photos for each record - this normally takes 5-8 hours to copy (5000+ photos)
            What I want to do is to run multiple processes to do this copy in parallel, so that i can have say 5 processes doing this copy .


            thanks

            Anand






            Hi Vaijnath,



            Thats what I meant, php 'as a language' doesn't

            support muti threading there are ways to do it curl

            being one, fork being other, depends on 'what' you

            want to do.



            Anand,

            What exactly do you want to do? keep a web page open

            (maintain session) for hours while your background

            process finishes?

            Can you share your application flow?



            Regards,

            Amit.



            ____________ _________ _________ _________ _________ _________ _

            Never miss a thing. Make Yahoo your home page.

            http://www.yahoo com/r/hs












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          • pinky_goyal22
            with curl control returns on next line when the curl request completes.but if it a kind of multi threading support it should run multiple requests at the
            Message 5 of 9 , Jan 8, 2008
              with 'curl' control returns on next line when the curl request
              completes.but if it a kind of multi threading support it should run
              multiple requests at the same time.

              --- In bang-phpug@yahoogroups.com, "Amit Rana" <amitrana77@...> wrote:
              >
              > Hi,
              > Yes, there is no multi threading support in php but if you want to
              > start a parallel process you can curl (or start another http
              > request). Also depends what you want to do, getting content via ajax
              > is also a 'kind of' multi threading.
              >
              > On the server side if you are doing curl, dis advantage is that you
              > there is no way to inform the main thread about success/failure of
              > the child thread (if you dont want to wait).
              >
              > HTH
              >
              > --- In bang-phpug@yahoogroups.com, "pinky_goyal22" <pinks.forums@>
              > wrote:
              > >
              > > Hi All!
              > >
              > > does any one have idea about multi threading in php ???
              > > i have googled for the topic but didn't get much except php doesn't
              > > support multithreading.
              > >
              > > if any one have idea about it or have some good link please provide
              > me
              > > that.
              > >
              > > thanks in advance.
              > >
              > > pinky
              > >
              >
            • Amit Rana
              In this case what Vaijnath suggested will work pretty well. You dont even want to wait for child processes to finish. Just fork out different processes for
              Message 6 of 9 , Jan 9, 2008
                In this case what Vaijnath suggested will work pretty
                well. You dont even want to wait for child processes
                to finish. Just fork out different processes for
                copying. Just code intelligently so that all processes
                dont end up working on same rows.

                Regards,
                Amit.

                --- Anand Subramanian <axsubram@...> wrote:

                >
                > Here is my application flow. There is no UI
                > involved.
                > We have a PHP program that reads an xml file
                > (normally containing 5000+ records).
                > Each of the record can contain one or more links for
                > photos. The photos are stored in a diff server/diff
                > domain.
                > Our php program. will read the records, insert into
                > db (this gets done pretty fast)
                > Then it copies the photos for each record - this
                > normally takes 5-8 hours to copy (5000+ photos)
                > What I want to do is to run multiple processes to do
                > this copy in parallel, so that i can have say 5
                > processes doing this copy .
                >
                >
                > thanks
                >
                > Anand
                >
                >
                >
                >
                >
                >
                > Hi Vaijnath,
                >
                >
                >
                > Thats what I meant, php 'as a language' doesn't
                >
                > support muti threading there are ways to do it curl
                >
                > being one, fork being other, depends on 'what' you
                >
                > want to do.
                >
                >
                >
                > Anand,
                >
                > What exactly do you want to do? keep a web page
                > open
                >
                > (maintain session) for hours while your background
                >
                > process finishes?
                >
                > Can you share your application flow?
                >
                >
                >
                > Regards,
                >
                > Amit.
                >
                >
                >
                > ____________ _________ _________ _________ _________
                > _________ _
                >
                > Never miss a thing. Make Yahoo your home page.
                >
                > http://www.yahoo com/r/hs
                >
                >
                >
                >
                >
                >
                >
                >
                >
                >
                >
                >
                > <!--
                >
                > #ygrp-mkp{
                > border:1px solid
                > #d8d8d8;font-family:Arial;margin:14px
                > 0px;padding:0px 14px;}
                > #ygrp-mkp hr{
                > border:1px solid #d8d8d8;}
                > #ygrp-mkp #hd{
                >
                color:#628c2a;font-size:85%;font-weight:bold;line-height:122%;margin:10px
                > 0px;}
                > #ygrp-mkp #ads{
                > margin-bottom:10px;}
                > #ygrp-mkp .ad{
                > padding:0 0;}
                > #ygrp-mkp .ad a{
                > color:#0000ff;text-decoration:none;}
                > -->
                >
                >
                >
                > <!--
                >
                > #ygrp-sponsor #ygrp-lc{
                > font-family:Arial;}
                > #ygrp-sponsor #ygrp-lc #hd{
                > margin:10px
                >
                0px;font-weight:bold;font-size:78%;line-height:122%;}
                > #ygrp-sponsor #ygrp-lc .ad{
                > margin-bottom:10px;padding:0 0;}
                > -->
                >
                >
                >
                > <!--
                >
                > #ygrp-mlmsg {font-size:13px;font-family:arial,
                > helvetica, clean, sans-serif;}
                > #ygrp-mlmsg table {font-size:inherit;font:100%;}
                > #ygrp-mlmsg select, input, textarea {font:99% arial,
                > helvetica, clean, sans-serif;}
                > #ygrp-mlmsg pre, code {font:115% monospace;}
                > #ygrp-mlmsg * {line-height:1.22em;}
                > #ygrp-text{
                > font-family:Georgia;
                > }
                > #ygrp-text p{
                > margin:0 0 1em 0;}
                > #ygrp-tpmsgs{
                > font-family:Arial;
                > clear:both;}
                > #ygrp-vitnav{
                >
                padding-top:10px;font-family:Verdana;font-size:77%;margin:0;}
                > #ygrp-vitnav a{
                > padding:0 1px;}
                > #ygrp-actbar{
                > clear:both;margin:25px
                > 0;white-space:nowrap;color:#666;text-align:right;}
                > #ygrp-actbar .left{
                > float:left;white-space:nowrap;}
                > .bld{font-weight:bold;}
                > #ygrp-grft{
                > font-family:Verdana;font-size:77%;padding:15px 0;}
                > #ygrp-ft{
                > font-family:verdana;font-size:77%;border-top:1px
                > solid #666;
                > padding:5px 0;
                > }
                > #ygrp-mlmsg #logo{
                > padding-bottom:10px;}
                >
                > #ygrp-vital{
                >
                background-color:#e0ecee;margin-bottom:20px;padding:2px
                > 0 8px 8px;}
                > #ygrp-vital #vithd{
                >
                font-size:77%;font-family:Verdana;font-weight:bold;color:#333;text-transform:uppercase;}
                > #ygrp-vital ul{
                > padding:0;margin:2px 0;}
                > #ygrp-vital ul li{
                > list-style-type:none;clear:both;border:1px solid
                > #e0ecee;
                > }
                > #ygrp-vital ul li .ct{
                >
                font-weight:bold;color:#ff7900;float:right;width:2em;text-align:right;padding-right:.5em;}
                > #ygrp-vital ul li .cat{
                > font-weight:bold;}
                > #ygrp-vital a{
                > text-decoration:none;}
                >
                > #ygrp-vital a:hover{
                > text-decoration:underline;}
                >
                > #ygrp-sponsor #hd{
                > color:#999;font-size:77%;}
                > #ygrp-sponsor #ov{
                > padding:6px
                > 13px;background-color:#e0ecee;margin-bottom:20px;}
                > #ygrp-sponsor #ov ul{
                > padding:0 0 0 8px;margin:0;}
                > #ygrp-sponsor #ov li{
                > list-style-type:square;padding:6px 0;font-size:77%;}
                > #ygrp-sponsor #ov li a{
                > text-decoration:none;font-size:130%;}
                > #ygrp-sponsor #nc{
                > background-color:#eee;margin-bottom:20px;padding:0
                > 8px;}
                > #ygrp-sponsor .ad{
                > padding:8px 0;}
                > #ygrp-sponsor .ad #hd1{
                >
                font-family:Arial;font-weight:bold;color:#628c2a;font-size:100%;line-height:122%;}
                > #ygrp-sponsor .ad a{
                > text-decoration:none;}
                > #ygrp-sponsor .ad a:hover{
                > text-decoration:underline;}
                > #ygrp-sponsor .ad p{
                > margin:0;}
                > o{font-size:0;}
                > .MsoNormal{
                > margin:0 0 0 0;}
                > #ygrp-text tt{
                > font-size:120%;}
                > blockquote{margin:0 0 0 4px;}
                > .replbq{margin:4;}
                > -->
                >
                >
                >
                >
                >
                >
                >
                >
                >
                >
                ____________________________________________________________________________________
                > Looking for last minute shopping deals?
                > Find them fast with Yahoo! Search.
                http://tools.search.yahoo.com/newsearch/category.php?category=shopping



                ____________________________________________________________________________________
                Looking for last minute shopping deals?
                Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
              • ganu.ullu@gmail.com
                FYI http://www.phpclasses.org/browse/package/1136.html this gives just an idea. but as per the above discussion. the multiple curl and exec will do your job.
                Message 7 of 9 , Jan 9, 2008
                  FYI
                  http://www.phpclasses.org/browse/package/1136.html
                  this gives just an idea.

                  but as per the above discussion.
                  the multiple curl and exec will do your job.


                  On 1/9/08, Amit Rana <amitrana77@...> wrote:
                  >
                  > In this case what Vaijnath suggested will work pretty
                  > well. You dont even want to wait for child processes
                  > to finish. Just fork out different processes for
                  > copying. Just code intelligently so that all processes
                  > dont end up working on same rows.
                  >
                  > Regards,
                  > Amit.
                  >
                  > --- Anand Subramanian <axsubram@... <axsubram%40yahoo.com>> wrote:
                  >
                  > >
                  > > Here is my application flow. There is no UI
                  > > involved.
                  > > We have a PHP program that reads an xml file
                  > > (normally containing 5000+ records).
                  > > Each of the record can contain one or more links for
                  > > photos. The photos are stored in a diff server/diff
                  > > domain.
                  > > Our php program. will read the records, insert into
                  > > db (this gets done pretty fast)
                  > > Then it copies the photos for each record - this
                  > > normally takes 5-8 hours to copy (5000+ photos)
                  > > What I want to do is to run multiple processes to do
                  > > this copy in parallel, so that i can have say 5
                  > > processes doing this copy .
                  > >
                  > >
                  > > thanks
                  > >
                  > > Anand
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > > Hi Vaijnath,
                  > >
                  > >
                  > >
                  > > Thats what I meant, php 'as a language' doesn't
                  > >
                  > > support muti threading there are ways to do it curl
                  > >
                  > > being one, fork being other, depends on 'what' you
                  > >
                  > > want to do.
                  > >
                  > >
                  > >
                  > > Anand,
                  > >
                  > > What exactly do you want to do? keep a web page
                  > > open
                  > >
                  > > (maintain session) for hours while your background
                  > >
                  > > process finishes?
                  > >
                  > > Can you share your application flow?
                  > >
                  > >
                  > >
                  > > Regards,
                  > >
                  > > Amit.
                  > >
                  > >
                  > >
                  > > ____________ _________ _________ _________ _________
                  > > _________ _
                  > >
                  > > Never miss a thing. Make Yahoo your home page.
                  > >
                  > > http://www.yahoo com/r/hs
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > > <!--
                  > >
                  > > #ygrp-mkp{
                  > > border:1px solid
                  > > #d8d8d8;font-family:Arial;margin:14px
                  > > 0px;padding:0px 14px;}
                  > > #ygrp-mkp hr{
                  > > border:1px solid #d8d8d8;}
                  > > #ygrp-mkp #hd{
                  > >
                  > color:#628c2a;font-size:85%;font-weight:bold;line-height:122%;margin:10px
                  > > 0px;}
                  > > #ygrp-mkp #ads{
                  > > margin-bottom:10px;}
                  > > #ygrp-mkp .ad{
                  > > padding:0 0;}
                  > > #ygrp-mkp .ad a{
                  > > color:#0000ff;text-decoration:none;}
                  > > -->
                  > >
                  > >
                  > >
                  > > <!--
                  > >
                  > > #ygrp-sponsor #ygrp-lc{
                  > > font-family:Arial;}
                  > > #ygrp-sponsor #ygrp-lc #hd{
                  > > margin:10px
                  > >
                  > 0px;font-weight:bold;font-size:78%;line-height:122%;}
                  > > #ygrp-sponsor #ygrp-lc .ad{
                  > > margin-bottom:10px;padding:0 0;}
                  > > -->
                  > >
                  > >
                  > >
                  > > <!--
                  > >
                  > > #ygrp-mlmsg {font-size:13px;font-family:arial,
                  > > helvetica, clean, sans-serif;}
                  > > #ygrp-mlmsg table {font-size:inherit;font:100%;}
                  > > #ygrp-mlmsg select, input, textarea {font:99% arial,
                  > > helvetica, clean, sans-serif;}
                  > > #ygrp-mlmsg pre, code {font:115% monospace;}
                  > > #ygrp-mlmsg * {line-height:1.22em;}
                  > > #ygrp-text{
                  > > font-family:Georgia;
                  > > }
                  > > #ygrp-text p{
                  > > margin:0 0 1em 0;}
                  > > #ygrp-tpmsgs{
                  > > font-family:Arial;
                  > > clear:both;}
                  > > #ygrp-vitnav{
                  > >
                  > padding-top:10px;font-family:Verdana;font-size:77%;margin:0;}
                  > > #ygrp-vitnav a{
                  > > padding:0 1px;}
                  > > #ygrp-actbar{
                  > > clear:both;margin:25px
                  > > 0;white-space:nowrap;color:#666;text-align:right;}
                  > > #ygrp-actbar .left{
                  > > float:left;white-space:nowrap;}
                  > > .bld{font-weight:bold;}
                  > > #ygrp-grft{
                  > > font-family:Verdana;font-size:77%;padding:15px 0;}
                  > > #ygrp-ft{
                  > > font-family:verdana;font-size:77%;border-top:1px
                  > > solid #666;
                  > > padding:5px 0;
                  > > }
                  > > #ygrp-mlmsg #logo{
                  > > padding-bottom:10px;}
                  > >
                  > > #ygrp-vital{
                  > >
                  > background-color:#e0ecee;margin-bottom:20px;padding:2px
                  > > 0 8px 8px;}
                  > > #ygrp-vital #vithd{
                  > >
                  >
                  > font-size:77%;font-family:Verdana;font-weight:bold;color:#333;text-transform:uppercase;}
                  > > #ygrp-vital ul{
                  > > padding:0;margin:2px 0;}
                  > > #ygrp-vital ul li{
                  > > list-style-type:none;clear:both;border:1px solid
                  > > #e0ecee;
                  > > }
                  > > #ygrp-vital ul li .ct{
                  > >
                  >
                  > font-weight:bold;color:#ff7900;float:right;width:2em;text-align:right;padding-right:.5em;}
                  > > #ygrp-vital ul li .cat{
                  > > font-weight:bold;}
                  > > #ygrp-vital a{
                  > > text-decoration:none;}
                  > >
                  > > #ygrp-vital a:hover{
                  > > text-decoration:underline;}
                  > >
                  > > #ygrp-sponsor #hd{
                  > > color:#999;font-size:77%;}
                  > > #ygrp-sponsor #ov{
                  > > padding:6px
                  > > 13px;background-color:#e0ecee;margin-bottom:20px;}
                  > > #ygrp-sponsor #ov ul{
                  > > padding:0 0 0 8px;margin:0;}
                  > > #ygrp-sponsor #ov li{
                  > > list-style-type:square;padding:6px 0;font-size:77%;}
                  > > #ygrp-sponsor #ov li a{
                  > > text-decoration:none;font-size:130%;}
                  > > #ygrp-sponsor #nc{
                  > > background-color:#eee;margin-bottom:20px;padding:0
                  > > 8px;}
                  > > #ygrp-sponsor .ad{
                  > > padding:8px 0;}
                  > > #ygrp-sponsor .ad #hd1{
                  > >
                  >
                  > font-family:Arial;font-weight:bold;color:#628c2a;font-size:100%;line-height:122%;}
                  > > #ygrp-sponsor .ad a{
                  > > text-decoration:none;}
                  > > #ygrp-sponsor .ad a:hover{
                  > > text-decoration:underline;}
                  > > #ygrp-sponsor .ad p{
                  > > margin:0;}
                  > > o{font-size:0;}
                  > > .MsoNormal{
                  > > margin:0 0 0 0;}
                  > > #ygrp-text tt{
                  > > font-size:120%;}
                  > > blockquote{margin:0 0 0 4px;}
                  > > .replbq{margin:4;}
                  > > -->
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > __________________________________________________________
                  > > Looking for last minute shopping deals?
                  > > Find them fast with Yahoo! Search.
                  > http://tools.search.yahoo.com/newsearch/category.php?category=shopping
                  >
                  > __________________________________________________________
                  > Looking for last minute shopping deals?
                  > Find them fast with Yahoo! Search.
                  > http://tools.search.yahoo.com/newsearch/category.php?category=shopping
                  >
                  >
                  >


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