Improve company productivity with a Business Account.Sign Up

x
?
Solved

Check if a remote www-page is online...

Posted on 2006-11-19
3
Medium Priority
?
216 Views
Last Modified: 2007-01-05
Hi,

I have a PHP-page that fetches information from another site, BUT the problem is that the site sometimes is not available or extremely slow. Hence, I would like to check if the site is online, prior to fetching the information from the site. How do I do that in the best way?

I have tried to use both
fsockopen("www.example.com",80);
and
file_get_contents()

Is there someway to set a timeout-limit?

Thanks in advance,
Jan
0
Comment
Question by:madwax
1 Comment
 
LVL 13

Accepted Solution

by:
Robin Hickmott earned 1200 total points
ID: 17976721
You shoul be able to do this in the fsock declaration.

fsockopen ( string target [, int port [, int &errno [, string &errstr [, float timeout]]]] )

Basically declare

fsockopen("www.example.com",80,$errno, $errstr,5)

will time out after 5 seconds and you can use the $errno and $errstr values to ask why. You can then do

if (!fsockopen("www.example.com",80,$errno, $errstr,5)) {
      echo("Site is dead");
} else {
     echo("Alive");
}

If you want to set a limit on how long your script spends reading data then you can use

http://us2.php.net/manual/en/function.stream-set-timeout.php

This function shoulw allow you to set a timelimit on streams
0

Featured Post

The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Password hashing is better than message digests or encryption, and you should be using it instead of message digests or encryption.  Find out why and how in this article, which supplements the original article on PHP Client Registration, Login, Logo…
The title says it all. Writing any type of PHP Application or API code that provides high throughput, while under a heavy load, seems to be an arcane art form (Black Magic). This article aims to provide some general guidelines for producing this typ…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

606 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question