从仪表板激活插件时，将调用以下挂钩。

register_activation_hook( __FILE__, \'myplugin_activate\' );
function myplugin_activate() {
   //create a variable to specify the details of page
   $post = array(     
             \'post_content\'   => \'content\', //content of page
             \'post_title\'     =>\'title\', //title of page
             \'post_status\'    =>  \'publish\' , //status of page - publish or draft
             \'post_type\'      =>  \'page\'  // type of post
   );
   wp_insert_post( $post ); // creates page
}