A subtle difference between your syntax wp-footershould be wp_footer, underscore _ and not hypthen – add_filter(‘wp-footer’, fahad); // wrong… add_filter(‘wp_footer’, ‘fahad’); // right.. Follow the naming convention of functions: (Codex) Plugin_API: Action_Reference » the wp_footer hook (Codex) Plugin_API: Action_Reference (Codex) Function_Reference
wp_mail() is defined in wp-includes/pluggable.php. This file is loaded after the plugins are loaded, but before the hook plugins_loaded has been fired. So the answer is: wait. add_action( ‘plugins_loaded’, ‘renderHTML’ ); On a side note: prefix your function names and your global variables.
You can look at the Codex. Encodes < > & ” ‘ (less than, greater than, ampersand, double quote, single quote). Will never double encode entities. Given that, arguably, both of those strings need sanitization. Imagine a site name like >> “My” Website’s Great Title <<” Also, since you are using this in Javascript, you … Read more
It´s possible select which plugin load by page or post […]? Short answer: Not with a plugin (nor with code in a theme). Normally, in WordPress, you use conditional tags to undestand in which post or page you are, e.g. you can use is_page(‘my-page’) or is_post(12) and so on. The problem is these conditional tags … Read more
If you haven’t studied up on WordPress’s own unit testing tools and how to use them with plugins, I’d recommend that you do that. Here’s a tutorial I wrote, to get you started: http://codesymphony.co/writing-wordpress-plugin-unit-test
If ACF (or any other plugin) is active on the site you do not need to include its files as they are all being included in the wordpress initialization process. The only tricky part is that you don’t know the order in which files are included and yours might be included before the ACF files … Read more
1. First of all functions.php is for themes, that are different things than plugins. In WordPress themes should be used for presentation only, plugin for functionality. If you want you can use themes for functionality, but you shouldn’t. In fact, themes and plugins are just php files that at a specific moment of a WordPress … Read more
There is no action variable on the data you’re passing to Ajax. This way WordPress is sending just a generic call to Ajax which always return 0. You must edit your data on your JS file to something like: data: { ‘user_input’: user_input_last, ‘action’: ‘tags_autofill_function’ },
From what you are saying you have translated your plugin and now you want to be sure the future update won’ be overwritten. So to avoid that happening you can always put your po/mo translation files (if provided) in global languages folder that is located on your server in wp-content/languages/plugins folder. If plugin have language … Read more
When ordering or closing metaboxes, those actions require nonces, add the following to your code and see if that resolves the problem. <?php wp_nonce_field(‘closedpostboxes’, ‘closedpostboxesnonce’, false ); ?> <?php wp_nonce_field(‘meta-box-order’, ‘meta-box-order-nonce’, false ); ?> Additional: You should add metaboxes to your page using add_meta_box and output them using do_meta_boxes passing in the hook for your … Read more