When you activate a new wordpress theme in the dashboard of appearance/themes, switch_theme is called with the to-be-switched theme as the parameter. switch_theme saves the $$sidebars_widgets in the theme_mod-currenttheme option, […]

Ajax is used by wordpress for communication between browser and server. For example, after you login wordpress dashboard, drag a widget onto a sidebar, fill some settings and click the […]

A function in cron.php wp_cron() is hooked to init action to check crons(got from the ‘cron’  option in the wp_options table). if it sees there is a cron that should […]

Today it turns out I  got a big misunderstanding of HTML checkbox. I thought <input type=”checkbox”  value=”1″> will check the box, while <input type=”checkbox”  value=”0″> will uncheck the box. Unfortunately, […]