Dynamic local “.dev” site mapping for Apache & WordPress

httpd-vhosts.conf

#
# Use name-based virtual hosting.
#
NameVirtualHost *:80

#
# Dynamic virtual hosting
#
# http://some.example.dev => /Users/username/Sites/example
<VirtualHost *:80>
    VirtualDocumentRoot "/Users/username/Sites/%-2"
    ServerName default.dev
    ServerAlias *.dev
</VirtualHost>

# http://some.example.10.0.0.1.xip.io => /Users/username/Sites/example
<VirtualHost *:80>
    VirtualDocumentRoot "/Users/username/Sites/%-7"
    ServerName xip.io
    ServerAlias *.xip.io
</VirtualHost>

wp-config.php

# http://codex.wordpress.org/Editing_wp-config.php#Advanced_Options
define( 'WP_SITEURL', 'http://' . $_SERVER['SERVER_NAME'] );
define( 'WP_HOME',    'http://' . $_SERVER['SERVER_NAME'] );
 
# http://andrewnacin.com/2010/04/23/5-ways-to-debug-wordpress/
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );    # error_log("debug message");
define( 'WP_DEBUG_DISPLAY', false );
define( 'SCRIPT_DEBUG', true );
define( 'SAVEQUERIES', true );