I have a require("config.php") with arrays, but still get Undefined variable error
Try adding
global $car_park;
in your function. When you include the definition of $car_park, it is creating a global variable, and to access that from within a function, you must declare it as global, or access it through the $GLOBALS superglobal.
See the manual page on variable scope for more information.
Even though Paul describes what's going on I'll try to explain again.
When you create a variable it belongs to a particular scope. A scope is an area where a variable can be used.
For instance if I was to do this
$some_var = 1;
function some_fun()
{
echo $some_var;
}
the variable is not allowed within the function because it was not created inside the function. For it to work inside a function you must use the global keyword so the below example would work
$some_var = 1;
function some_fun()
{
global $some_var; //Call the variable into the function scope!
echo $some_var;
}
This is vice versa so you can't do the following
function init()
{
$some_var = true;
}
init();
if($some_var) // this is not defined.
{
}
There are a few ways around this but the simplest one of all is using $GLOBALS
array which is allowed anywhere within the script as they're special variables.
So
$GLOBALS['config'] = array(
'Some Car' => 22
);
function do_something()
{
echo $GLOBALS['config']['some Car']; //works
}
Also make sure your server has Register globals turned off in your INI for security. http://www.php.net/manual/en/security.globals.php