WordPress/wp-load.php

<?php
/**
 * Bootstrap file for setting the ABSPATH constant
 * and loading the wp-config.php file. The wp-config.php
 * file will then load the wp-settings.php file, which
 * will then set up the WordPress environment.
 *
 * If the wp-config.php file is not found then an error
 * will be displayed asking the visitor to set up the
 * wp-config.php file.
 *
 * Also made to work in the wp-admin/ folder, because it
 * will look in the parent directory if the file is not
 * found in the current directory.
 *
 * @package WordPress
 */

/** Define ABSPATH as this files directory */
define( 'ABSPATH', dirname(__FILE__) . '/' );

if ( file_exists( ABSPATH . 'wp-config.php') ) {

	/** The config file resides in ABSPATH */
	require_once( ABSPATH . 'wp-config.php' );

} elseif ( file_exists( dirname(ABSPATH) . '/wp-config.php' ) ) {

	/** The config file resides one level below ABSPATH */
	require_once( dirname(ABSPATH) . '/wp-config.php' );

} else {

	// A config file doesn't exist

	// Set a path for the link to the installer
	if (strpos($_SERVER['PHP_SELF'], 'wp-admin') !== false) $path = '';
	else $path = 'wp-admin/';

	// Die with an error message
	require_once( ABSPATH . '/wp-includes/classes.php' );
	require_once( ABSPATH . '/wp-includes/functions.php' );
	require_once( ABSPATH . '/wp-includes/plugin.php' );
	wp_die("There doesn't seem to be a <code>wp-config.php</code> file. I need this before we can get started. Need more help? <a href='http://codex.wordpress.org/Editing_wp-config.php'>We got it</a>. You can create a <code>wp-config.php</code> file through a web interface, but this doesn't work for all server setups. The safest way is to manually create the file.</p><p><a href='{$path}setup-config.php' class='button'>Create a Configuration File</a>", "WordPress &rsaquo; Error");

}

?>