how to run a php program on a server that receives data and updates a database

Posted on 2014-09-10
Last Modified: 2014-09-20
I need to be able to connect to a server (using IP address and port) and run a php query that updates a database with a record (add or update)
Question by:rcschroeder
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LVL 83

Expert Comment

by:Dave Baldwin
ID: 40315996
There are quite a few details that need to be taken care of to do that.  Do you know how to write a PHP program?  Do you have FTP to the server to upload files?  Is the database already set up or is that something you need to do also?

Author Comment

ID: 40316027
all of that is already done
I have a complete web application (Sencha ext3)
I have set up virtual hosts and they are listening
My problem is that I have something wrong that i don't understand about how to execute the php program when hitting the server on a port number.

I have tried a lot of things, but some detail about how to do this is missing
What I am trying to do is write a record to a database (from a desktop application), I am NOT opening the  browser.

Expert Comment

by:ghjkl ghjkl
ID: 40316047
Please read the following php example code, you can define the  other port  from
define("DB_HOST", "localhost:3306") in which 3306 is default port for mysql,
and you can read this php mysql tutorial site at w3schools if need at
define("DB_HOST", "localhost:3306");
define("DB_USER", "myaccount");
define("DB_PASSWORD", "mydatabase");
$mysqli=new mysqli(DB_HOST, DB_USER, DB_PASSWORD);
if ($mysqli->connect_errno) {
printf("Failed to connect to server: %s\n", $mysqli->connect_error);exit();}
$db_select =$mysqli->select_db($db_filename);
if(!$db_select) {die("Unable to select ".$db_filename);}
echo "Your database ".$db_filename." is connected";

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LVL 83

Expert Comment

by:Dave Baldwin
ID: 40316118
That is entirely confusing.  Everything I find about "Sencha ext3" says that it is a Javascript framework that runs in your web browser.  I didn't see anything about PHP.  At the very least, you need to give us some more details about what you're trying to do and the error messages you are getting.

Author Comment

ID: 40316134
Php is the server side language

But that is not my problem

My problem is when I send the request it does not run

Author Comment

ID: 40316208
If I hit nnn.nnn.nnn.nnn:1024 in a browser it should redirect me to var/www/myfolder/cart.php

or at least I thought is should
But it does not seem to work,

So obviously I don't know how to do this

This is what I need to know
LVL 83

Expert Comment

by:Dave Baldwin
ID: 40316222
That's better.  Is one of the virtual hosts listening at "nnn.nnn.nnn.nnn:1024"?  If it is, it might connect you to "nnn.nnn.nnn.nnn:1024/myfolder/cart.php" but "var/www/myfolder/cart.php" is not a web accessible file path.  You should only be able to access a file that is 'relative' to the root of the webserver.  Try putting "nnn.nnn.nnn.nnn:1024/myfolder/cart.php" in your browser and see what you get.

If none of your hosts are listening to "nnn.nnn.nnn.nnn:1024", you won't have access.

Author Comment

ID: 40322079
Virtual host is listening (per netstat -ntulp) on 1024 but this thing still does not work.
LVL 83

Expert Comment

by:Dave Baldwin
ID: 40322098
Details are important.  What message are you getting that tells you that it doesn't work?

Author Comment

ID: 40322220
I don't get a message.
I cannot find anything in the apache2 log files that was generated by this program.

Let me explain exactly what I am trying to do. Maybe my approach is totally wrong?

I have a desktop application running on a windows workstation. I want to update a record on the mysql server, either create a new record in the database, or fetch a record or update an existing record.

The workstation is running in a remote location and access to the server is only available through the web.

LVL 83

Expert Comment

by:Dave Baldwin
ID: 40322246
Ignore the desktop app for the moment.  Lets see if it is responding at all.  Put "nnn.nnn.nnn.nnn:1024/" (using the real IP address) in your web browser address bar and tell me what you get.

Accepted Solution

rcschroeder earned 0 total points
ID: 40323231
We are giving up on this. We are using a different way to do it
Using virtual host seems to be too difficult to implement.
We will hit the remote server directly on port 3306 using  MYDAC.

I feel that we  could have gotten this working if we spent enough time on it, but it is not worth the effort in this case. I appreciate you efforts to help me.

Author Closing Comment

ID: 40334179
Help was excellent and I am grateful.
Just going for a different solution

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