The Codex is a good place to start: wp_head and wp_footer the wp_head() function call goes in the head section of your theme template, and simply does all of the actions hooked to it. If you look in /wp-includes/default-filters.php, you’ll see all of the default actions that are called when this function is invoked. You … Read more
Actually, the condition is always returning false because you are not passing the post id to the function has_post_thumbnail() and the function always getting the default value which is null. has_post_thumbnail( $recent[“ID”] ). Same with the function get_the_post_thumbnail(). get_the_post_thumbnail( $recent[“ID”] ). $args = array( ‘numberposts’ => ‘3’ ); $recent_posts = wp_get_recent_posts($args); foreach( $recent_posts as $recent … Read more
esc_attr() is written specifically for escaping a string that is to be used as an html attribute, which means also escaping single and double-quote characters etc. In general, it’s better to use the data validation API that WP provides rather than the generic PHP functions.
you can do it like this: //add my_print to query vars function add_print_query_vars($vars) { // add my_print to the valid list of variables $new_vars = array(‘my_print’); $vars = $new_vars + $vars; return $vars; } add_filter(‘query_vars’, ‘add_print_query_vars’); then add a template redirect based on that query_var: add_action(“template_redirect”, ‘my_template_redirect_2322’); // Template selection function my_template_redirect_2322() { global $wp; … Read more
Use wp_delete_attachment( $post_id ) if you have used wp_insert_attachment() before. $post_id is the attachment ID. If you haven’t used wp_insert_attachment() a simple … unlink( $upload[‘file’] ); … will do it.
You could also use this function: set_query_var(‘foo’, $foo); WP will extract and expose all query variables in every template it loads, so you will be able to access it as $foo
In your code example you have: wp_schedule_event( time(), ‘hourly’, ‘symbiocards_hourly_event’); but there is no symbiocards_hourly_event hook defined. If you are using it in the functions.php file in your current theme directory, then please try this snippet instead: add_action( ‘wp’, ‘symbiocards_activation’ ); add_action( ‘symbiocards_hourly_event’, ‘update_symbiocards’ ); function symbiocards_activation() { if ( !wp_next_scheduled( ‘symbiocards_hourly_event’ ) ) { … Read more
As of WordPress 4.6.0 there is a resource hints API that automatically adds all unique enqueued domains, which you can override with wp_resource_hints – you should only use the following answer if you’re stuck with < 4.6.0 All you can do is bump the priority of your hook: add_action( ‘wp_head’, ‘dns_prefetch’, 0 /* Highest priority … Read more
Normally WordPress does not run shortcode that you put into a custom field. By default, Custom Fields display whatever value you enter, as plain-text, so if you try entering a shortcode, (in the format [shortcode] VALUE [/shortcode]) you’ll end up displaying the entire text, including the tags. Add the following in your template file, it … Read more
There’s nothing wrong with enqueuing many files by using wp_enqueue_script. If you are referring to it as frustrating, then there is a simple solution for this. PHP offers a function that can list files and directories. By using glob you can list every .js file in your directory, and then enqueue them by a loop. … Read more