coding a php server

mrobertson · 06-01-2005, 12:47 PM

I am new to coding with php and was wondering if anyone could give me some samlpe code or general code relating to what I need to do. I basically need to request a http script from a vb6 client in windows. On the linux side, I need to setup and http address that recieves four different values from that vb6 client and parse them out giving each a name. The client is set on a timer to send the new value every second so I will need to be able to recieve every second on the php server end. Any help would be greatly appreciated.

david_ross · 06-01-2005, 12:58 PM

If the vbscript is just accessing a url such as:
http://server/script.php?var1=val1&var2=val2

Then the php is:
<?
print "var1 = ".$_GET["var1"]."<br>";
print "var2 = ".$_GET["var2"]."<br>";
?>

mrobertson · 06-01-2005, 01:03 PM

The problem is when the 4 values are passed....the come is as a string all together...ie
(123456, 12.99, 45.876, 0.3456). The need to be parsed out and then assigned names. What would be the code for this?.....Also....is php installed in the knoppix version of linux where I can just go ahead and begin coding?

david_ross · 06-01-2005, 01:11 PM

If they are seperated like that on the query string then:
$var = explode(", ", $_SERVER["QUERY_STRING"]);

$var[0] will be the first number $var[1] the second and so on.

From:
http://ftp.knoppix.nl/os/Linux/distr...x/packages.txt
It looks like it
ii php4 4.3.10-12 server-side, HTML-embedded scripting language (meta-package)

mrobertson · 06-01-2005, 01:16 PM

How do I setup the url on the php side? If possible could you give me a generic template of what the phpcode will look like?

For instance

How to setup the url ect, ect

Step by step?

david_ross · 06-01-2005, 01:20 PM

Quote:

Originally posted by mrobertson
How do I setup the url on the php side?

I'm not sure what you mean by this. Are you asking how to set up a webserver?

mrobertson · 06-01-2005, 01:24 PM

Yes,

I am wondering what is the step by step process to set this up to be able to run. I am sure you have to seclare a url somewhere ........recieve the string.....separate the string(like you already mentioned to me)....then display the values on a url page. I am curious to see a general example of the coding to do this or some source code. I have never done this before and to see something already done, similar to what i need to do would be a big help.

Also do you know if knoppix had php already installed on it and if not how I can install it?

david_ross · 06-01-2005, 01:34 PM

I've never set up a webserver environment in knoppix before but if you are looking for a general LAMP tutorial see:
http://lamps.efactory.de/e-lamps-2-0.php

Once you have set up your webserver save this code as parse.php:

Code:

<?
$vars = explode(", ", urldecode($_SERVER["QUERY_STRING"]));
foreach ($vars as $var){
 print $var."<br>";
}
?>

It can then be accessed as:
http://ip.of.server.here/parse.php?1....876,%200.3456

As I already stated, from the package list it looks like php is included with knoppix.

mrobertson · 06-01-2005, 01:38 PM

Will this be the only code that I will need once I setup the web server in order to pass in the 4 variables?

david_ross · 06-01-2005, 01:41 PM

It depends what you want it to do.

mrobertson · 06-01-2005, 01:46 PM

Well this program will will be stored on a network cameras memory and the values will be put on the video feed. That is really all I have to do. My client send the updated values every second. Will the php script recive these updates every second or is there another setting or extra coding needed for that?
If so do you know the syntax for this type of thing?

david_ross · 06-01-2005, 01:54 PM

If the client retreives the url every second then the server will receive the values every second.

mrobertson · 06-01-2005, 01:58 PM

I appreciate all of your help and very fast responses. I gonna go ahead and give this a shot. Would it be ok if I have any other questions to email you directly? Again thnsk a bunch for you help and patience with me

david_ross · 06-01-2005, 02:18 PM

If you have further questions just post them to the forum, that's what it's there for.

I'm subscribed to this thread so I'll know if you reply.

mrobertson · 06-02-2005, 08:10 AM

David,

I am still having some trouble. I dont really understand how to set this webserver up. Is there any way that you could explain in detail to me exactly where it needs to be set up....vb client or php server and how to do it (ie the syntax). also I tried to at least code the php code into knoppix and got an error on the first line ( <?) saying:

?: No such file or directory

Also after going home and thinking about it yesterday.....my client is setup to passed the variable string through a winsock. Am i going to have to change this or designate a port and host address in php?