oop - Read For Learn

WordPress plugin development OOP style

Change ma_admin_options_init() to: public function ma_admin_options_init(){ register_setting(‘ma_admin_styler’, ‘ma_admin_styler’, array( $this,’ma_admin_styler_validate’)); add_settings_section(‘main_section’, ”, array( $this,’section_text_default’), ‘ma_admin_styler’); add_settings_field(‘error_font_color’, ‘Error Font Color’, array( $this,’ma_error_font_color’), ‘ma_admin_styler’, ‘main_section’); } The fourth parameter of add_settings_section() and add_settings_field() is $page and that needs to match the page ID set in add_options_page().

Get object for a few selected taxonomies

I am not aware of a function to get only specific term objects for a post type but it is not hard to filter out the ones you want. For example: $taxonomies = get_object_taxonomies( ‘post’, ‘objects’ ); $taxonomies = array_intersect_key($taxonomies,array_flip(array(‘category’,’post_tag’))); var_dump($taxonomies); But since you know the taxonomies you want, you could also just use get_taxonomy( … Read more

A question about add_action()

The emailer::send is the function callback for a publish_post action hook. This action hook accepts only one parameter which is the post ID and it is passed by WordPress. When you define an action hook, you set what parameters are passed to the callback functions. For example: $arg_1 = “The aregument value”; do_action( ‘my_custom_action’, $arg_1 … Read more

How to prevent PHP fatal error if plugin hasn’t been enabled and a method is called in theme file?

A plugin is a PHP include in its most elementary sense. You cannot call a function if it’s not registered in PHP. If a plugin is not activated, it is therefore not included, and the function is unknown. You cannot call it. I would recommend that you use this as a must-use plugin so that … Read more

Using OOP inside a Plugin – Is it allowed?

depends if you want to write OOP or just use PHP classes 😉 wordpress hook system is procedural in nature and there is a big amount of globals being used so it takes some mental effort to translate it into actual OOP. Most (99.9%) people attempting this fail and produce something which is basically procedural … Read more

Autoloader not finding classes from my plugin

Given the first PHP code snippet you posted, I don’t see that you’re using the class yet, which explains why you’re not seeing your classes in the autoload error log that you’re debugging with. Note that use will not trigger PHP’s autoloader. use My_Plugin\Includes; You need to actually instantiate a class, check that it exists, … Read more

How can I access string value in an array?

If you’re asking how to get those meta keys via WordPress, you can use the get_user_meta() – https://codex.wordpress.org/Function_Reference/get_user_meta get_user_meta( $user_id, ‘tskypeid’, true )

Code does not work in class implementation but works fine in functions.php file

As Nathan has said in his comment above, the update_events() function needs to be a public function, not a private function: public scope to make that variable/function available from anywhere, other classes and instances of the object. private scope when you want your variable/function to be visible in its own class only. protected scope when … Read more

Undefined method class::construct() when creating a plugin

In your get_instance() method, you call self::$instance->construct() not self::$instance->__construct(). Also, there’s no reason to call the constructor like that; it will be called when you invoke new self();

Override static method in WC_Shortcodes class (shortcode) [closed]

This is how you can (or should) remove the default Shortcode: // Hook after `WC_Shortcodes::init()` is executed. add_action( ‘init’, function(){ // Remove the shortcode. remove_shortcode( ‘product_categories’ ); // Add it back, but using our callback. add_shortcode( ‘product_categories’, ‘my_product_categories_shortcode’ ); }, 11 ); And here’s how you can modify the default Shortcode’s output: function my_product_categories_shortcode( $atts … Read more

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