The table where your URL is saved is wp_options. You should do an update on the columns that use the URL for your site: UPDATE TABLE wp_options SET option_value = “new domain” WHERE option_name = “siteurl” UPDATE TABLE wp_options SET option_value = “new domain” WHERE option_name = “home” I might be missing some value, but … Read more
Well the second bit of code is technically the correct way to do it. However, at the end of the add_settings_field() you can pass arguments. Please view the WordPress Add_Settings_Field function reference. This will help you in getting the best understanding of how the add_settings_field() function really works. Now, with that said, you could use … Read more
You need to use the ‘show_user_profile’, ‘edit_user_profile’, ‘personal_options_update’ and ‘edit_user_profile_update’ hooks. Here’s some code to add a Phone number: add_action( ‘show_user_profile’, ‘yoursite_extra_user_profile_fields’ ); add_action( ‘edit_user_profile’, ‘yoursite_extra_user_profile_fields’ ); function yoursite_extra_user_profile_fields( $user ) { ?> <h3><?php _e(“Extra profile information”, “blank”); ?></h3> <table class=”form-table”> <tr> <th><label for=”phone”><?php _e(“Phone”); ?></label></th> <td> <input type=”text” name=”phone” id=”phone” class=”regular-text” value=”<?php echo esc_attr( … Read more
The question was for WordPress 3.0, but just in case someone has the same question for a more recent version, from WordPress Codex: “Starting with version 4.1, meta_query clauses can be nested in order to construct complex queries.” https://developer.wordpress.org/reference/classes/wp_query/#custom-field-post-meta-parameters So, that query should work on the current WordPress version.
Since WordPress 3.5 this option (XML-RPC) is enabled by default, and the ability to turn it off from WordPress dashboard is gone. Add this code snippet for use in functions.php: // Disable use XML-RPC add_filter( ‘xmlrpc_enabled’, ‘__return_false’ ); // Disable X-Pingback to header add_filter( ‘wp_headers’, ‘disable_x_pingback’ ); function disable_x_pingback( $headers ) { unset( $headers[‘X-Pingback’] ); … Read more
Store errors in your class or as a global, possibly in a transient or meta, and display them in admin notices on POST requests. WP does not feature any flash message handler.
When developing a plugin should the functions be grouped together into a Class to avoid namespace conflicts? Yes, but that’s only one of the minor arguments. In-fact that’s not the “true” nature of a class in OOAD. Does using classes create performance overheads for PHP? No, not notably. Bad design and/or bad written code or … Read more
The OpenID plugin you linked is the best one, but it has a minor bug preventing it from working with WordPress 3.0, at least when combined with PHP 5.3. The fix can be found here: http://code.google.com/p/diso/issues/detail?id=161
Object cache everywhere WordPress tries to reduce the number of database queries as much as possible. For example, anytime you get a meta field or a taxonomy field, before querying the database, WordPress looks if that that was already queried and stored in cache, and returns it from there instead of querying the database. The … Read more
I wound up working on the exact same thing and this post was very helpful. I used Custom Fields and here is the code that I used to create a list of all events greater than the current date. Note the extra taxonomy based filters. <?php // Let’s get the data we need to loop … Read more