WordPress/wp-includes/default-constants.php

<?php
/**
 * Defines constants and global variables that can be overridden, generally in wp-config.php.
 *
 * @package WordPress
 */

/**
 * Defines WordPress default constants.
 *
 * @since 3.0.0
 * @param $context
 */
function wp_default_constants( $context ) {

	switch( $context ) {

		case 'init' :

			// set memory limits
			if ( !defined('WP_MEMORY_LIMIT') ) {
				if( is_multisite() ) {
					define('WP_MEMORY_LIMIT', '64M');
				} else {
					define('WP_MEMORY_LIMIT', '32M');
				}
			}

			/**
			 * The $blog_id global, which you can change in the config allows you to create a simple
			 * multiple blog installation using just one WordPress and changing $blog_id around.
			 *
			 * @global int $blog_id
			 * @since 2.0.0
			 */
			if ( ! isset($blog_id) )
				$blog_id = 1;

			// set memory limits.
			if ( function_exists('memory_get_usage') && ( (int) @ini_get('memory_limit') < abs(intval(WP_MEMORY_LIMIT)) ) )
				@ini_set('memory_limit', WP_MEMORY_LIMIT);

			if ( !defined('WP_CONTENT_DIR') )
				define( 'WP_CONTENT_DIR', ABSPATH . 'wp-content' ); // no trailing slash, full paths only - WP_CONTENT_URL is defined further down

			// Add define('WP_DEBUG', true); to wp-config.php to enable display of notices during development.
			if ( !defined('WP_DEBUG') )
				define( 'WP_DEBUG', false );

			// Add define('WP_DEBUG_DISPLAY', false); to wp-config.php to use the globally configured setting for display_errors and not force it to On
			if ( !defined('WP_DEBUG_DISPLAY') )
				define( 'WP_DEBUG_DISPLAY', true );

			// Add define('WP_DEBUG_LOG', true); to enable php debug logging to WP_CONTENT_DIR/debug.log
			if ( !defined('WP_DEBUG_LOG') )
				define('WP_DEBUG_LOG', false);

			if ( !defined('WP_CACHE') )
				define('WP_CACHE', false);

			/**
			 * Private
			 */
			if ( !defined('MEDIA_TRASH') )
				define('MEDIA_TRASH', false);

			if ( !defined('SHORTINIT') )
				define('SHORTINIT', false);
			break;

		case 'wp_included':

			if ( !defined('WP_CONTENT_URL') )
				define( 'WP_CONTENT_URL', get_option('siteurl') . '/wp-content'); // full url - WP_CONTENT_DIR is defined further up

			/**
			 * Allows for the plugins directory to be moved from the default location.
			 *
			 * @since 2.6.0
			 */
			if ( !defined('WP_PLUGIN_DIR') )
				define( 'WP_PLUGIN_DIR', WP_CONTENT_DIR . '/plugins' ); // full path, no trailing slash

			/**
			 * Allows for the plugins directory to be moved from the default location.
			 *
			 * @since 2.6.0
			 */
			if ( !defined('WP_PLUGIN_URL') )
				define( 'WP_PLUGIN_URL', WP_CONTENT_URL . '/plugins' ); // full url, no trailing slash

			/**
			 * Allows for the plugins directory to be moved from the default location.
			 *
			 * @since 2.1.0
			 * @deprecated
			 */
			if ( !defined('PLUGINDIR') )
				define( 'PLUGINDIR', 'wp-content/plugins' ); // Relative to ABSPATH.  For back compat.

			/**
			 * Allows for the mu-plugins directory to be moved from the default location.
			 *
			 * @since 2.8.0
			 */
			if ( !defined('WPMU_PLUGIN_DIR') )
				define( 'WPMU_PLUGIN_DIR', WP_CONTENT_DIR . '/mu-plugins' ); // full path, no trailing slash

			/**
			 * Allows for the mu-plugins directory to be moved from the default location.
			 *
			 * @since 2.8.0
			 */
			if ( !defined('WPMU_PLUGIN_URL') )
				define( 'WPMU_PLUGIN_URL', WP_CONTENT_URL . '/mu-plugins' ); // full url, no trailing slash

			/**
			 * Allows for the mu-plugins directory to be moved from the default location.
			 *
			 * @since 2.8.0
			 * @deprecated
			 */
			if ( !defined( 'MUPLUGINDIR' ) )
				define( 'MUPLUGINDIR', 'wp-content/mu-plugins' ); // Relative to ABSPATH.  For back compat.
			break;

		case 'ms_loaded';

			global $wp_default_secret_key;

			/**
			 * Used to guarantee unique hash cookies
			 * @since 1.5
			 */
			if ( !defined( 'COOKIEHASH' ) ) {
				$siteurl = get_site_option( 'siteurl' );
				if ( $siteurl )
					define( 'COOKIEHASH', md5( $siteurl ) );
				else
					define( 'COOKIEHASH', '' );
			}

			/**
			 * Should be exactly the same as the default value of SECRET_KEY in wp-config-sample.php
			 * @since 2.5.0
			 */
			$wp_default_secret_key = 'put your unique phrase here';

			/**
			 * @since 2.0.0
			 */
			if ( !defined('USER_COOKIE') )
				define('USER_COOKIE', 'wordpressuser_' . COOKIEHASH);

			/**
			 * @since 2.0.0
			 */
			if ( !defined('PASS_COOKIE') )
				define('PASS_COOKIE', 'wordpresspass_' . COOKIEHASH);

			/**
			 * @since 2.5.0
			 */
			if ( !defined('AUTH_COOKIE') )
				define('AUTH_COOKIE', 'wordpress_' . COOKIEHASH);

			/**
			 * @since 2.6.0
			 */
			if ( !defined('SECURE_AUTH_COOKIE') )
				define('SECURE_AUTH_COOKIE', 'wordpress_sec_' . COOKIEHASH);

			/**
			 * @since 2.6.0
			 */
			if ( !defined('LOGGED_IN_COOKIE') )
				define('LOGGED_IN_COOKIE', 'wordpress_logged_in_' . COOKIEHASH);

			/**
			 * @since 2.3.0
			 */
			if ( !defined('TEST_COOKIE') )
				define('TEST_COOKIE', 'wordpress_test_cookie');

			/**
			 * @since 1.2.0
			 */
			if ( !defined('COOKIEPATH') )
				define('COOKIEPATH', preg_replace('|https?://[^/]+|i', '', get_option('home') . '/' ) );

			/**
			 * @since 1.5.0
			 */
			if ( !defined('SITECOOKIEPATH') )
				define('SITECOOKIEPATH', preg_replace('|https?://[^/]+|i', '', get_option('siteurl') . '/' ) );

			/**
			 * @since 2.6.0
			 */
			if ( !defined('ADMIN_COOKIE_PATH') )
				define( 'ADMIN_COOKIE_PATH', SITECOOKIEPATH . 'wp-admin' );

			/**
			 * @since 2.6.0
			 */
			if ( !defined('PLUGINS_COOKIE_PATH') )
				define( 'PLUGINS_COOKIE_PATH', preg_replace('|https?://[^/]+|i', '', WP_PLUGIN_URL)  );

			/**
			 * @since 2.0.0
			 */
			if ( !defined('COOKIE_DOMAIN') )
				define('COOKIE_DOMAIN', false);

			/**
			 * @since 2.6.0
			 */
			if ( !defined('FORCE_SSL_ADMIN') )
				define('FORCE_SSL_ADMIN', false);
			force_ssl_admin(FORCE_SSL_ADMIN);

			/**
			 * @since 2.6.0
			 */
			if ( !defined('FORCE_SSL_LOGIN') )
				define('FORCE_SSL_LOGIN', false);
			force_ssl_login(FORCE_SSL_LOGIN);

			/**
			 * @since 2.5.0
			 */
			if ( !defined( 'AUTOSAVE_INTERVAL' ) )
				define( 'AUTOSAVE_INTERVAL', 60 );

			/**
			 * @since 2.9.0
			 */
			if ( !defined( 'EMPTY_TRASH_DAYS' ) )
				define( 'EMPTY_TRASH_DAYS', 30 );
			break;

		case 'plugins_loaded':

			if ( !defined('WP_POST_REVISIONS') )
			define('WP_POST_REVISIONS', true);
			break;

		case 'setup_theme':

			/**
			 * Web Path to the current active template directory
			 * @since 1.5.0
			 */
			define('TEMPLATEPATH', get_template_directory());

			/**
			 * Web Path to the current active template stylesheet directory
			 * @since 2.1.0
			 */
			define('STYLESHEETPATH', get_stylesheet_directory());

			/**
			 * Slug of the fallback theme for this install.
			 * Will be used as the fallback if the current theme doesn't exist.
			 * @since 3.0.0
			 */
			define( 'WP_FALLBACK_THEME', 'twentyten' );
			break;

	}

}

?>