There is a lot of leftovers in script-related articles in Codex that are not entirely correct (putting it mildly). The enqueue should not be done before wp_head(), it should be done on wp_enqueue_scripts. Which is technically early inside wp_head(). It doesn’t harm performance, because registering/enqueueing script is merely explaining to WordPress how it should be … Read more
Options that don’t exist get the fact of their non-existence cached in memory when you attempt to get them. So you can check that cache to determine the difference. $value = get_option(‘example’); $notoptions = wp_cache_get( ‘notoptions’, ‘options’ ); if ( isset( $notoptions[‘example’] ) ) { // option does not exist } else { // option … Read more
This happens because plugins_loaded fires before the global variable $wp_rewrite exists. From wp-settings.php: // Load active plugins. foreach ( wp_get_active_and_valid_plugins() as $plugin ) include_once( $plugin ); unset( $plugin ); // Load pluggable functions. require( ABSPATH . WPINC . ‘/pluggable.php’ ); require( ABSPATH . WPINC . ‘/pluggable-deprecated.php’ ); // Set internal encoding. wp_set_internal_encoding(); // Run wp_cache_postload() … Read more
The solution has been found here – Make WordPress Core I’ve made changes in wp-includes/pluggable.php on line 352 from $phpmailer->setFrom( $from_email, $from_name ); to $phpmailer->setFrom( $from_email, $from_name, false ); And it works! Thanks to Marius L. J. (Clorith)!
register_post_type function should be executed every time a WP request is made. Default post types don’t have this requirement. You can use your code as is, in MU plugin. Just create a .PHP file with this code, and place it in mu-plugins sub-folder of wp-content. You don’t need to provide any standard plugin headers.
Trac has some discussion and code for possible replacement in future version, ticket #14511 new function – wp_get_sites($args).
You might want to look at the routine that WP uses for this: locate_template(). It is in wp-includes/theme.php and is called from a number of functions in that file. Those functions are used by wp-includes/template-loader.php to select the correct type of template based on the current page and then walk up the theme hierarchy looking … Read more
I run a WordPress checkout of trunk, a branch, or a tag. This way I can switch WordPress versions easily: svn sw http://svn.automattic.com/wordpress/trunk svn sw http://svn.automattic.com/wordpress/tags/3.1 In wp-content/plugins I have a trunk checkout for each of my plugins: cd wp-content/plugins svn co http://plugins.svn.wordpress.org/stats/trunk/ stats I do my work on the stats plugin (updating the changelog … Read more
There’s a filter: function wpse15368_update_menu_item_type( $args ) { return $args[‘menu-item-type’] = ‘page’; } add_action( ‘wp_update_nav_menu_item’, ‘wpse15368_update_menu_item_type’ );
You can delete files per plugin if the server’s PHP user has write permissions. The trick is to delete it immediately on activation. Here is a basic sample code: <?php # -*- coding: utf-8 -*- /** * Plugin Name: Delete .htaccess * Description: Deletes the .htaccess file on activation, deactivates itself then. * Plugin URI: … Read more