is_page() requires WP_Query to be initialized and I assume your code runs before this. You can use this function within the filter callback instead: add_filter(‘the_content’, function($c){ return is_page() ? luc_add_cutom_fields_to_content($c) : $c; });
The the_content filter will work for this. This filter allows you to alter the output of the_content() and get_the_content(): add_filter( ‘the_content’, ‘wpse_members_only’, 20 ); function wpse_members_only( $content ) { // If user is not logged in, show restricted content message. // Change this conditional statement based on how you want to check for // membership … Read more
I’m not exactly sure where you’re having problems. Adding and removing hooks is the basis of WordPress programming. Once you understand the hook system, you’ll have a much easier time. What are hooks? Everything you need to get started is available at Plugin API/Hooks. WordPress has two types of hooks: actions and filters, but they’re … Read more
Printing the script in the head is a method called do_item in the wp_script class. In this method you see this line: $tag = “{$cond_before}{$before_handle}<script type=”text/javascript” src=”https://wordpress.stackexchange.com/questions/262406/$src”></script>\n{$after_handle}{$cond_after}”; So, the script type is hardwired in the function. However, a few lines further on, you see this: $tag = apply_filters( ‘script_loader_tag’, $tag, $handle, $src ); This allows … Read more
You have invalid PHP (which should have been obvious from the PHP error log). function review_link_custom( $link, get_the_ID(), $review_link, $instance[‘cwp_tp_readreview’] ) { Functions can have neither other functions nor array+key as an argument, you can only specify the name for an argument passed. Also, when adding a filter you have to specify how many arguments … Read more
Ok, so I don’t know if this is the best way, but it’s working for now. Within my OOP class (I have a custom plugin to override a WC plugin): remove_action( ‘wp_ajax_wc_function’, array( WC_Parent_Class, ‘wc_do_stuff’ ) ); remove_action( ‘wp_ajax_nopriv_wc_function’, array( WC_Parent_Class, ‘wc_do_stuff’ ) ); add_action( ‘wp_ajax_wc_function’, array( __CLASS__, ‘my_override_do_stuff’ ) ); add_action( ‘wp_ajax_nopriv_wc_function’, array( __CLASS__, … Read more
You are echoing the content of the excerpt, which is being put into the header. Use get_the_excerpt() instead: function after_post_content($content){ if (is_single()) { $content .= get_the_excerpt(); } return $content; } add_filter( “the_content”, “after_post_content”); Generally, WordPress functions beginning with the_ will echo the output, while functions starting will get_the_… will get the value.
The filter you are looking for is save_post. This filter is triggered each time you save a post. add_action( ‘save_post’, ‘my_function’ ); function my_function( $post_id ){ // Do your stuff here } This filter passes the post’s ID to the callback function, so you have access to everything you need.
This should work fine if(have_posts()){ while(have_posts()){ the_post(); $content = get_the_content(); echo substr($content, 200, 20); } }
the function wp_filter_object_list can only filter one value. for your filter try that : $post_tags = array_filter($post_tags, function ($e) { return in_array($e->slug, [“dog”, “cat”]); });