Building the Back End: Part 1 - Realtime Web Apps: With HTML5 WebSocket, PHP, and jQuery - page 151

In config.inc.php , add the code shown in bold to declare the configuration variables as constants:

<?php

/**
* A sample configuration file
*
* The variables below need to be filled out with environment specific data.
*
* @author Jason Lengstorf <[e-mail]>
* @author Phil Leggetter <[e-mail]>
*/

// Set up an array for constants
$_C = array();

//-----------------------------------------------------------------------------
// General configuration options
//-----------------------------------------------------------------------------

$_C['APP_TIMEZONE'] = 'US/Pacific';

//-----------------------------------------------------------------------------
// Database credentials
//-----------------------------------------------------------------------------

$_C['DB_HOST'] = 'localhost';
$_C['DB_NAME'] = '';
$_C['DB_USER'] = '';
$_C['DB_PASS'] = '';

//-----------------------------------------------------------------------------
// Enable debug mode (strict error reporting)
//-----------------------------------------------------------------------------

$_C['DEBUG'] = TRUE;

//-----------------------------------------------------------------------------
// Converts the constants array into actual constants
//-----------------------------------------------------------------------------

foreach ($_C as $constant=>$value) {
define($constant, $value);
}

Save this file after adding the correct values for each variable; you can close it in your editor afterward because
you won't need to edit this file again during this chapter.

■ don't forget to update the DB_HOST , DB_NAME , DB_USER , and DB_PASS values with your development database
credentials. Without them, the app will throw a fatal error when you build the database connection scripts later in this chapter.

Caution