How to collect info.

PHP123456

Dear ALL

how can i made a PHP page to collect some info. from some sites and store it in a DB ,indeed till that no problem but the problem that i want it to run forever !! i mean it must work everyday without i have to reopen the page or click any button , i can for example one it once and then it should work for ever

any tips ??

thanks for any help:o

bye

Horizon88

This is impossible, as there is no possible way to ensure that your server can run forever.

Even if you wrote an application to be distributed across n amount of servers, you'd still have no guarantees there would always be a server with yours running on it, forever.

You could try writing some viral code that infects all possible hosts everywhere, installs an independent, stable PHP installation and locks it to prevent updates, and let your code propagate to n-many servers around the world, of course, but that still doesn't address longevity of the HTTP specifications, network infrastructure around the world, permanence of the pages you intend to scrape information from, reliability of sustainable power, or permanence of the planet.

Best of luck, though. Keep us posted.

PHP123456

Horizon88 wrote:
This is impossible, as there is no possible way to ensure that your server can run forever.

Even if you wrote an application to be distributed across n amount of servers, you'd still have no guarantees there would always be a server with yours running on it, forever.

You could try writing some viral code that infects all possible hosts everywhere, installs an independent, stable PHP installation and locks it to prevent updates, and let your code propagate to n-many servers around the world, of course, but that still doesn't address longevity of the HTTP specifications, network infrastructure around the world, permanence of the pages you intend to scrape information from, reliability of sustainable power, or permanence of the planet.

Best of luck, though. Keep us posted.

not to this degree !!!

Hey now assume i have a server and i am sure that i working for ever about 99.99% OK so what will be the next step ............??

NogDog

cron

PHPonCrack

PHP123456 wrote:
run forever

server issues put aside, just talking about the script itself. How about creating an infinite loop. I remember when I used to program is VB, you can use a timer control to periodically execute some code, so that one do not have to use an infinite loop, but I don't think php has anything similar. So, infinite loop may work, but obviously will peak the cpu usage continuously.

PHP123456

PHPonCrack wrote:
server issues put aside, just talking about the script itself. How about creating an infinite loop. I remember when I used to program is VB, you can use a timer control to periodically execute some code, so that one do not have to use an infinite loop, but I don't think php has anything similar. So, infinite loop may work, but obviously will peak the cpu usage continuously.

indeed my problem is server issue 😃
useing timer or even using the system date i can trigger my code for examle every day at 7 clock am OK
but my problem if i create that in a simple PHP page I must leave this page open for ever so what is the help
another problem i don'r have a complete access to the server i want to upload my code to any free hosting server in the wb wich support PHP ..

so can this be done or forget it 😕

Thanks All

PHPonCrack

sorry, guess the only answer is to have your own server.

NogDog

And to repeat myself: cron (or Windows Scheduler if on a Windows server).

PHP123456

NogDog wrote:
And to repeat myself: cron (or Windows Scheduler if on a Windows server).

And to repeat myself: 😕

  [U]I don't have a server , I will use any free hosting server in the internet so how i will access the cron or the Windows Scheduler

[/U]

Thanks ALL :rolleyes:

NogDog

Any hosting package worth using has cron or another scheduler available. If it does not and you need this capability, then it's time to upgrade to another hosting service. If you absolutely must use a free host and cannot find one that supports cron, then any other solution that has the script running continuously with some sort of timing loop is likely to eat up CPU cycles that might raise a red flag with the hosting service, causing them to disable that script (or your account); so be careful pursuing any such solution and do some local testing to check how it utilizes resources before you upload it to a live server.

Horizon88

About the only way would be to get your own server. You'll have to come up with another way to do it if you can't pony up to get a server.

You could write a script using an infinite loop and set_time_limit(0) but it won't work so well, and any sort of shared hosting is going to cripple a good deal of site-scraping functions in PHP.

while (1) {
   set_time_limit(0);
   // do stuff
}

But chances are you'll have to go back and check it SOME time.

PHP123456

NogDog wrote:
Any hosting package worth using has cron or another scheduler available. If it does not and you need this capability, then it's time to upgrade to another hosting service. If you absolutely must use a free host and cannot find one that supports cron, then any other solution that has the script running continuously with some sort of timing loop is likely to eat up CPU cycles that might raise a red flag with the hosting service, causing them to disable that script (or your account); so be careful pursuing any such solution and do some local testing to check how it utilizes resources before you upload it to a live server.

thx alot for your help
umm i guess u should told me that from start in more simple way as i am Newbies 😃

anyway i found a good host but seem i have to buy an account since the simple account doesn't support cron

it is awardspace.com i see it is so good one

anyway thanks again

PHPonCrack

PHP123456 wrote:
it is awardspace.com

Hey PHP123456

I just setup a free account with awardspace.com, did you notice that it gives a 550 error when trying to ftp a zip file? But if you use MS FP, then it will upload, but then you can't delete it using ftp