PHP variables, includes problem

Peter B

I am building a site using PHP.

It has many pages, so to make some sort of consistency I made myself a config.php.

This contains

//config.php

	$config = array();

        $config['db_user'] = "username";
	
	$config['db_password'] = "password";
	
	$config['db_name'] = "database_name";

        $config['results_per_page'] = "database_name";

//etc....

Instead of including this file to each page, I included it (using include "config.php") in a file called commonly_used_methods.php which is already included in each page (using include "commonly_used_methods.php").

//commonly_used_methods.php

function add($r,$y)
{ 
          return ($r+$y);
}

function conn()
{
          $dbh=mysql_connect ("localhost", $config['db_user'], $config['db_password']) or die ('I cannot connect to the database because: ' . mysql_error());
  		mysql_select_db ($config['db_name']);
}

include "config.php"; 

//etc....

For some reason when I echo values on the webpage, I can use the values from the config.php file without a problem. However when I try to run methods containing the variables from config.php, such as conn() they appear to be empty?

I does not matter if I include config.php at the start or at the end of commonly_used_methods.php

Can anyone help?

Thanks

Peter

kdouglas

try declaring the $config variable as:
[PHP]
global $config=array();
[/PHP]
and then in each method where you want to use it, declare:

[PHP]global $config;[/PHP]

oscarBravo

Are you assigning the $config array in a function?

seamus

You need to have the
include("config.php")
at the top of the other page. You will also need to declare the config array as global inside each function which uses it. Just "global $config" at the start of each function.

Peter B

Cheers Guys,

Problem solved!

Just shows how little I know about variable storage in memory for PHP programs.