This shortcode allows authors to show an info box in posts or pages where the shortcode itself is added. The HTML code generated is a div with a class name “alert” plus an extra class name by default, “alert-warning”. A parameter can change this second class to change the visual aspect of the alert box.

[warning_box]Warning message[/warning_box]

This will add a new menu item labelled “Custom Menu” to the side menu of the WordPress dashboard. When you click on this menu item, WordPress will call the function ‘custom_menu_page_display’ and show a page titled “Custom Menu”, with the heading “Hello World” and a paragraph that reads “This is a custom page”.

In a plugin or in theme functions file, we must create a function that takes text as input, changes it as needed, and returns it. This function must be added as a filter for “the_content”.

$wpdb is a global variable that contains the WordPress database object. It can be used to perform custom database actions on the WordPress database. It provides the safest means for interacting with the WordPress database.

$value1,'col2'=>$value2,'col3'=>$value3);
    $format = array('%s','%s','%s');
    $wpdb->insert('table_name', $data, $format);
}

wp_enqueue_script is usually used to inject javascript files in HTML.

add_action(‘wp_enqueue_scripts’, ‘add_custom_script’);
function add_custom_script(){
    wp_enqueue_script( 
        'jquery-custom-script',
        plugin_dir_url( __FILE__ ).'js/jquery-custom-script.js',
        array( 'jquery')
    );
}

One obvious way is to download, parse, and cache the blog’s RSS feeds. However, since the blog and the website are on the same server, you can use all the WordPress power, even outside it.

Recent Posts

3));
    foreach($recent_posts as $recent){
        echo '
' . $recent["post_title"] . '
 ';
    }
?>