因此，基本上我需要访问checked（）的值，以便在我的单模板中加载不同的模板部分。php文件。

这是我的元框：

<?php

    function my_theme_add_meta_box_post_template_switcher() {

    dd_meta_box( \'my_theme-post-layout\', __( \'Post template\', \'my_theme\' ),   \'my_theme_show_post_template_switcher\', \'post\', \'normal\', \'high\' );
}

    add_action( \'add_meta_boxes\', \'my_theme_add_meta_box_post_template_switcher\');


       function my_theme_show_post_template_switcher( $post ) {
       $template = get_post_meta( $post->ID, \'_my_theme_post_template\', true );

       // Default template for new posts
        if( empty( $template ) ) {
        $template = \'default\';
}

wp_nonce_field( \'save_post_template\', \'post_template\' );

?>
<fieldset class="clearfix">
    <div class="post-layout">
       <label for="sidebar-left-post">
            <input type="radio" id="sidebar-left-post" name="_my_theme_post_template" value="template-1" <?php checked( $template, \'template-1\' ); ?> />
            <img width="150" height="100" src="<?php echo get_template_directory_uri(); ?>/admin/images/left-sidebar.png" >
            <span> <?php _e( \'Sidebar left\', \'my_theme\' ); ?> </span>
        </label>
    </div>
    <div class="post-layout">
        <label for="full-width-post">
            <input type="radio" id="full-width-post" name="_my_theme_post_template" value="template-2" <?php checked( $template, \'template-2\' ); ?> />
            <img width="150" height="100" src="<?php echo get_template_directory_uri(); ?>/admin/images/full-width-layout.png" >
            <span> <?php _e( \'Full width\', \'my_theme\' ); ?> </span>
        </label>
    </div>
</fieldset>
<?php
}

function my_theme_save_post_template( $post_id ) {
    if( defined( \'DOING_AUTOSAVE\' ) && DOING_AUTOSAVE ) {
    return;
}

if( !isset( $_POST[\'post_template\'] ) || !wp_verify_nonce(   $_POST[\'post_template\'], \'save_post_template\' ) ) {
return;
}

if( !current_user_can( \'edit_post\' ) ) {
    return;
}

if( isset( $_POST[\'_my_theme_post_template\'] ) ) {
    update_post_meta( $post_id, \'_my_theme_post_template\', esc_attr( strip_tags( $_POST[\'_my_theme_post_template\'] ) ) );
}
}

add_action( \'save_post\', \'my_theme_save_post_template\' );


function my_theme_get_post_template_for_template_loader( $template ) {
$post = get_queried_object();

if ( $post ) {
    $template = get_stylesheet_directory() . "/single.php";
}

return $template;

}

现在，我需要访问checked（）值，所以在我的单子中。php我可以根据checked（）的值加载不同的部分，如下所示：

        switch ( $checked ) {
            case checked( $template, \'template-1\' ):
                get_template_part( \'inc/post-loops/template-1\' );
                break;
            case checked( $template, \'template-2\' ) :
                get_template_part( \'inc/post-loops/template-2\' );
            default:
                get_template_part( \'inc/post-loops/template-1\' );
                break;
        }

$template = get_post_meta( get_the_ID(), \'_my_theme_post_template\', true );

switch ( $template ) {
    case \'template-2\':
        get_template_part( \'inc/post-loops/template-1\' );
        break;

    case \'template-1\':
        get_template_part( \'inc/post-loops/template-2\' );
        break;

    default:
        // Neither values matched, do something else?
        break;
}

$tmplt = get_post_meta($postID, \'template\', true);
switch ($tmplt) {
   case 1:
      get_template_part( \'inc/post-loops/template-1\' );
      break;
   case 2:
      get_template_part( \'inc/post-loops/template-2\' );
      break;
   default:
      get_template_part( \'inc/post-loops/template-1\' );
      break;
}