您可以通过更新2个选项来完成此操作。

<?php
    //This could be page or posts.
    update_option(\'show_on_front\', \'<posts/page>\');

    //This one sets the page you want on front, won\'t work if the above option is set to \'posts\'.
    update_option(\'page_on_front\', \'<id of the page you want to set as front page>\');
?>