The only thing that determines whether a function is available in another script is if it has been loaded before the other script attempts to use it. This is simply a matter of putting the <script></script> tag for the script with the function you need to use before the tag of the script that needs … Read more
You could check if the constant SITE_ID_CURRENT_SITE matches get_current_site()->id. The following does this for the activation. During runtime you have to check it again. register_activation_hook( __FILE__, ‘force_main_site_installation’ ); function force_main_site_installation() { if ( defined( ‘SITE_ID_CURRENT_SITE’ ) and SITE_ID_CURRENT_SITE !== get_current_site()->id ) { if ( function_exists(‘deactivate_plugins’) ) { deactivate_plugins( __FILE__ ); } die( ‘Install this plugin … Read more
The function wp_enqueue_scripts— with an ‘s’– is used as a callback to wp_head. All that the function wp_enqueue_scripts does is fire the wp_enqueue_scripts action. So the last time that you would be able to use the action wp_enqueue_scripts is before the wp_enqueue_scripts callback on the wp_head hook. In terms of theme templates, that means you … Read more
Notice: I’m considering that by Media Manager you’re referring to the Media Library. /wp-admin/media.php Maybe pre_get_posts could handle this, but won’t get there… I’d propose an alternative solution that prevents seeing lots of duplicates in the Media Library page: The output of the All Thumbs column is simply a link to the image. But I … Read more
Have you checked out the following plugin? http://wordpress.org/extend/plugins/public-post-preview/
You came to this in a bad time of changes. Tables in admin are being migrated from the old and scary ways to new shiny List Tables API using subclasses of WP_List_Table. Problem is – while classes are already in and being using core code, they are currently not meant for being used otherwise. Proper … Read more
If you look at the line the notice is being issued: $cc = array_merge( (array) $cc, explode( ‘,’, $content ) ); and $bcc = array_merge( (array) $bcc, explode( ‘,’, $content ) ); What its trying to do is merge a blank array that hasn’t been set with an array created by your headers. The notice … Read more
It totally depends on what data is being stored in the option, maybe_serialize will determine in the option is holding a singular static value, such as true/false, 0/1, empty string, whatever(it’s called when an option is created or updated).. it will serialize when dealing with objects and arrays, singular values are not serialized. The get_option … Read more
Unless the plugin is in the WP Plugin repository, WP will not ‘see’ the latest version of the update. Other than putting the plugin in the repository, you will have to manually update your plugin via FTP. Assuming that you are the author of the plugin, you should know when the plugin has a new … Read more
When you get this kind of message is usually means your plugin had a syntax error and was generating that kind of error messages because of how the loading on activation is handled, i.e. HTTP headers are sent after the error message is display. Your plugin’s error message is loaded in an <iframe>; have you … Read more