define('WP_USE_THEMES', true); 
/** Loads the WordPress Environment and Template */ 
require( dirname( __FILE__ ) . '/wp-blog-header.php' ); 

 
if ( !isset($wp_did_header) ) { 
$wp_did_header = true; 
require_once( dirname(__FILE__) . '/wp-load.php' ); 
wp(); 
require_once( ABSPATH . WPINC . '/template-loader.php' ); 
} 

 
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' ) && ! file_exists( dirname(ABSPATH) . '/wp-settings.php' ) ) { 
/** The config file resides one level above ABSPATH but is not part of another install */ 
require_once( dirname(ABSPATH) . '/wp-config.php' ); 
} else { 
…… 
} 

 
/* 好了！请不要再持续编辑。请保留本文件。应用欢快！ */ 
/** WordPress目录的相对门路。 */ 
if ( !defined('ABSPATH') ) 
define('ABSPATH', dirname(__FILE__) . '/'); 
/** 设置WordPress变量和蕴含文件。 */ 
require_once(ABSPATH . 'wp-settings.php'); 

 
define( 'WPINC', 'wp-includes' ); 
// Include files required for initialization. 
require( ABSPATH . WPINC . '/load.php' ); 
require( ABSPATH . WPINC . '/default-constants.php' ); 
require( ABSPATH . WPINC . '/version.php' ); 

 
function require_wp_db() { 
global $wpdb; 
require_once( ABSPATH . WPINC . '/wp-db.php' ); 
if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) 
require_once( WP_CONTENT_DIR . '/db.php' ); 
if ( isset( $wpdb ) ) 
return; 
$wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST ); 
} 

 
// Include the wpdb class and, if present, a db.php database drop-in. 
require_wp_db(); 

以上就是安达网络工作室关于《wordpress全局变量$wpdb在哪里进行初始化声明》的一些看法。更多内容请查看本栏目更多内容！