This will handle appending the content to single posts: function yourprefix_add_to_content( $content ) { if( is_single() ) { $content .= ‘Your new content here’; } return $content; } add_filter( ‘the_content’, ‘yourprefix_add_to_content’ );
A much better hook to use would the the update_option_{option_name} dynamic hook, which only runs after your specific option has been updated. So something like: add_action(‘update_option_woocommerce_email_send_time’, ‘send_time’) function update_send_time() { // Add code here to update cron job } The only problem you’ll get here is that scheduling the cron job for a time earlier … Read more
They were both introduced in version 2.9, but were done so in different files. update_postmeta went into /wp-admin/includes/post.php While… update_{$meta_type}_meta went into /wp-includes/meta.php It was only later that update_postmeta was shifted into /wp-includes/meta.php. So I believe it was for backward compatability, where by because the update_postmeta hook was always receiving the value of maybe_serialize() then … Read more
Short answer – Your original function (mostly) works. This is your function edited to do what it needs to do: function automatically_log_me_in( $user_id ) { wp_set_current_user( $user_id ); wp_set_auth_cookie( $user_id ); wp_redirect( home_url( ‘/some-ending-page/’ ) ); exit(); } add_action( ‘user_register’, ‘automatically_log_me_in’ ); Long answer – here is an explanation of why this is the answer. … Read more
Use get_current_blog_id() to check the current site. To run on site 2 only, use this: function new_meta_values($order_id) { if ( 2 !== get_current_blog_id() ) return; /* the rest of the function code */ }
I guess you mean add_action( ‘pre_get_posts’, ‘private_groups’ ); add_action( ‘pre_get_posts’, ‘search_results’ ); add_action( ‘pre_get_posts’, ‘name_profiles’ ); versus add_action( ‘pre_get_posts’, ‘combined_into_single_callback’ ); You can just check the difference using e.g. memory_get_usage() and timer_stop(). Many good plugins out there to help with that. I would say go with the first one, as they seems to be unrelated … Read more
I am confused because add_filter uses the word add when I feel like it is more on the lines of replace or overwrite (unless I am misunderstanding) You are misunderstanding. Both add_action and add_filter insert function callbacks into a kind of queue. You can add many callbacks to the same hook and they will fire … Read more
In my projects I do it like that PHP function foo() { echo ‘bar’; } add_action(‘wp_ajax_foo’, ‘foo’ ); // executed when logged in add_action(‘wp_ajax_nopriv_foo’, ‘foo’ ); // executed when logged out Javascript data = { action: ‘foo’, avalue: ‘some value’, ‘anothervalue’: ‘another value’ }; jQuery.post(ajaxurl, data, function(response){ alert(response); });
Don’t touch the load order, change the activation order instead. A working example can be found in this answer.
WordPress read the templates from file headers, and then set them in the cache. using wp_cache_set() nad a key that is derived from the md5 has of stylesheet folder. So, just overriding that cache we can show the templates we want. To override that cache we need to call wp_cache_set() again using same key. First … Read more