Assuming that we hit the switch statement and the page case and assuming that $all_images does indeed contain image urls: In your switch statement, try storing all the images in a variable first and then concatenate them with $content in your return statement. add_filter( ‘the_content’, ‘image_posts’ ); function image_posts( $content ) { global $post; if … Read more
It all depends, how these categories are displayed in your theme. If it’s done nicely and with proper use of WP template tags, then that list comes from get_the_category() function (all other functions are using this one). And at the end of that function you can find return apply_filters( ‘get_the_categories’, $categories, $id ); So it’s … Read more
I think what you’re ACTUALLY looking to do is to apply_filters(). add_filter() registers a new filter, whereas apply_filters() does the filters that have been registered. If that’s not what you’re looking to do, then you need to be aware that add_filter() needs to be run every time you want the filter applied. This allows plugins … Read more
I think your best bet is to check if the action parameter is set & equal to register: if ( isset( $_REQUEST[‘action’] ) && $_REQUEST[‘action’] == ‘register’ ) add_filter( ‘login_message’, ‘filter_register_text’ );
OK, duh: I needed to have my plugin in the /mu-plugins dir to make its filter available early enough for function wp_get_active_and_valid_plugins().
Using OOP PHP, add your initializer actions in the __construct and create appropriate methods for handling them. From your handler you can initialize any class variable (once) you want and reference it later without having to do any further checks. Here is an example: class my_plugin { private $post_type; private $isCustom = false; public function … Read more
You can use has_filter() to check for registered filers. Example: add_filter( ‘the_content’, function( $content ) { if ( has_filter( ‘the_content’, ‘pre_content_filter’ ) ) return ‘pre_content_filter() is active<br>’ . $content; return $content; }, -1 );
I’ve found the answer here: Customizing wp-activate.php It’s a bit of a workaround really, but it works pretty well. Step 1 Create a new page called ‘activate’ Step 2 Create a new template called ‘template-activate.php’ and add the following code: **Template (template-activate.php)** <?php /** * Template Name: Activation * */ /** * Confirms that the … Read more
To fully understand how WP works, you need to understand that WP is an event-driven platform(Though it’s a loose term, but I think it does help to understand better). You need to think like which event is occurring right now. In this case, a password is generated. Next question is, How can you change this … Read more
When you save a post, then you are basically submitting a big <form>. This form has an action pointing somewhere. Now there are two possibilities how the form is processed: AJAX (background reload) Default <form> handling (new request) Basic form submitting is adding a new request (2), so the data gets processed and then the … Read more