WordPressのデフォルト投稿状態を「非公開」にした

「wp-includes/functions.php」に次のコードを追加

/**
 * Set default state to private' when creating new draft article
 */
add_action( 'post_submitbox_misc_actions' , 'post_status_default_private' );
function post_status_default_private() {
    global $post;

    if ( $post->post_status == 'publish' ) {
        $visibility = 'public';
        $visibility_trans = __('Public');
    } elseif ( !empty( $post->post_password ) ) {
        $visibility = 'password';
        $visibility_trans = __('Password protected');
    } elseif ( $post->post_type == 'post' && is_sticky( $post->ID ) ) {
        $visibility = 'public';
        $visibility_trans = __('Public, Sticky');
    } else {
        $post->post_password = '';
        $visibility = 'private';
        $visibility_trans = __('Private');
    } 
?>
    <script type="text/javascript">
    (function($){
        try {
            $('#post-visibility-display').text('<?php echo $visibility_trans; ?>');
            $('#hidden-post-visibility').val('<?php echo $visibility; ?>');
            $('#visibility-radio-<?php echo $visibility; ?>').attr('checked', true);
        } catch(err) {
        }
    })(jQuery);
    </script>
<?php
}

/**

* Set default state to private' when creating new draft article

add_action( 'post_submitbox_misc_actions' , 'post_status_default_private' );

function post_status_default_private() {

global $post;

if ( $post->post_status == 'publish' ) {

$visibility = 'public';

$visibility_trans = __('Public');

} elseif ( !empty( $post->post_password ) ) {

$visibility = 'password';

$visibility_trans = __('Password protected');

} elseif ( $post->post_type == 'post' && is_sticky( $post->ID ) ) {

$visibility = 'public';

$visibility_trans = __('Public, Sticky');

} else {

$post->post_password = '';

$visibility = 'private';

$visibility_trans = __('Private');

}

(function($){

try {

$('#post-visibility-display').text('<?php echo $visibility_trans; ?>');

$('#hidden-post-visibility').val('<?php echo $visibility; ?>');

$('#visibility-radio-<?php echo $visibility; ?>').attr('checked', true);

} catch(err) {

}

})(jQuery);

</script>

<?php

}