How do I determine if an external web site is running through php? 1

[ExcalibursZone]

This is the purpose of my question. My ISP allows me to use PHP, however, I am not able to write to disk on their server using PHP (obviously a security risk if implemented incorrectly). I would like to create a simple guest book that would allow me to save the entries to disk. I am running PHP at home and would like to find out if my server (my box) is running when someone wants to access the guestbook. If my server is up, I would like to display the fully functional guestbook. If my server is down, I would like to instead display a page that informs the visitor that the server is down.

Any help would be great.

 

[iTST]

<?php
$handle = fopen(&quot;

http://your-dynamic-ip-at-home/guestbook.php&quot;;

if (!$handle) {
____________DISPLAY_SERVER_DOWN_MSG____________________
} else {
echo &quot;<meta http-equiv=\&quot;refresh\&quot; content=\&quot;0; URL=http://your-dynamic-ip-at-home/guestbook.php\&quot;>&quot;;
}
?>

If fopen_wrapper is not defined (can find out with phpinfo() on your website), use fsockopen() as describes in the php reference at

http://www.php.net/fsockopen

)

HTH, Sascha cu, Sascha

http://www.itst.org/

 

[ExcalibursZone]

thanks alot

 

[iTST]

you are welcome. cu, Sascha

http://www.itst.org/

 

[gerrygerry]

ExcalibursZone, a star might be in order for Sascha! That's some useful code!

I would rework as follows though:

<?
if(fopen(&quot;[URL unfurl="true"]http://your_ip&quot;,80))[/URL]
 {
 header(&quot;Location: [URL unfurl="true"]http://your_ip/gbook.php&quot;);[/URL]
 }
echo &quot;Site is down, sorry!&quot;;
?>

Just a cleaned up version, Sascha did the real work! -gerrygerry
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http://quickfreewebsite.com!