If you create a lot of WordPress blogs you probably like to prepare a list of categories for inclusion. This plugin simplifies the process by allowing you to add them all at once.
Add one category per line then click the “Add Categories” button. All categories will be created for you turning a 30 minute job into a 5 second one :)
Installation
Upload the masscats folder to your plugin folder. Activate the plugin and then locate the “Mass Category Adder” menu in the WordPress “Manage” menu.

Good share, you article very great, very usefull for us…thank you
Hi Martyn,
I am having a problem with your Mass Category Adder Plugin.
When I activate it I get this message in my WP dashboard:
The plugin generated 2 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.
When adding my categories I get these warnings:
Warning: include() [function.include]: URL file-access is disabled in the server configuration in /home/london1/public_html/wp-content/plugins/masscats/masscats.php on line 48
Warning: include(http://inlondonn1.co.uk/wp-admin/edit.php/wp-config.php) [function.include]: failed to open stream: no suitable wrapper could be found in /home/london1/public_html/wp-content/plugins/masscats/masscats.php on line 48
Warning: include() [function.include]: Failed opening ‘http://inlondonn1.co.uk/wp-admin/edit.php/wp-config.php’ for inclusion (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/london1/public_html/wp-content/plugins/masscats/masscats.php on line 48
Warning: require_once() [function.require-once]: URL file-access is disabled in the server configuration in /home/london1/public_html/wp-content/plugins/masscats/masscats.php on line 50
Warning: require_once(http://inlondonn1.co.uk/wp-admin/edit.php/wp-admin/admin-db.php) [function.require-once]: failed to open stream: no suitable wrapper could be found in /home/london1/public_html/wp-content/plugins/masscats/masscats.php on line 50
Fatal error: require_once() [function.require]: Failed opening required ‘http://inlondonn1.co.uk/wp-admin/edit.php/wp-admin/admin-db.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/london1/public_html/wp-content/plugins/masscats/masscats.php on line 50
I am using WP 3.2.1 and I have installed the plugin a few times to test but always the same errors.
Cheers,
Justin
19Oct2011
Hi Justin, I think this means in one of the files you may have a space after the closing tags. An include file ending with ? > <— and there is a space right there will then produce the “headers already sent” error. Its a pain to locate sometimes.