单击“编辑”按钮时，自定义字段值未显示在各个字段中。。当我们创建新帖子时，它们只是显示为空白。我可以在编辑时保存自定义字段中的值。。。但是保存的值仍然没有显示在字段中（这里是“id”文本和“membership”单选按钮），在“编辑”帖子时，id字段显示为空，单选按钮显示默认选中的值

有人能指出我做错了什么吗
以下是代码：

add_action( \'init\', \'codex_custom_init\' );
add_action( \'admin_menu\',\'member_manager_add_meta\' );
add_action( \'save_post\', \'member_manager_save_extras\' );
add_filter( "manage_edit-member_columns", "change_columns" );
add_action( "manage_member_posts_custom_column", "custom_columns", 10, 2 );

function codex_custom_init() {
    $labels = array(
        \'name\' => _x(\'Members\', \'post type general name\'),
        \'singular_name\' => _x(\'Member\', \'post type singular name\'),
        \'add_new\' => _x(\'Add New\', \'Member\'),
        \'add_new_item\' => __(\'Add New Member\'),
        \'edit_item\' => __(\'Edit Member\'),
        \'new_item\' => __(\'New Member\'),
        \'all_items\' => __(\'All Members\'),
        \'view_item\' => __(\'View Member\'),
        \'search_items\' => __(\'Search Members\'),
        \'not_found\' =>  __(\'No members found\'),
        \'not_found_in_trash\' => __(\'No members found in Trash\'), 
        \'parent_item_colon\' => \'\',
        \'menu_name\' => __(\'Members\')
    );
    $args = array(
        \'labels\' => $labels,
        \'public\' => true,
        \'publicly_queryable\' => true,
        \'show_ui\' => true, 
        \'show_in_menu\' => true, 
        \'query_var\' => true,
        \'rewrite\' => true,
        \'capability_type\' => \'post\',
        \'has_archive\' => true, 
        \'hierarchical\' => false,
        \'menu_position\' => null,
        \'supports\' => array( \'title\')
    ); 
    register_post_type(\'Member\',$args);
}


function member_manager_add_meta(){
    add_meta_box("members-meta", "Member Details","member_manager_meta_options",\'member\',\'normal\',\'high\');
}


function member_manager_meta_options(){
    global $post;

    $values =get_post_custom($post->ID);
    $id = isset( $values["isprp_id" ]) ? $values["isprp_id" ] : \' \';
    $membership = isset( $values["isprp_member" ]) ? esc_attr(  $values["isprp_member" ]): \'\';

    wp_nonce_field( \'my_meta_box_nonce\', \'meta_box_nonce\' );
    ?>
        <div class="member_manager_extras">
        <style type="text/css">
        <?php include(\'member_manager.css\'); ?>
        </style>
            <div><label for="isprp_id">ISPRP ID</label><input type="text" name="isprp_id" id="isprp_id"  value ="<?php echo $id; ?>" /></div>

        <div><label for="isprp_member">Membership Category</label>
        <input type="radio" name="isprp_member"  value="Life Member" <?php selected($membership,\'Life Member\'); ?>checked />Life Member<input type="radio" name="isprp_member"  value="Associate Member" <?php selected($membership,\'Associate Member\'); ?> />Associate  Member</div>
    <?php
 }

 // Save the Data


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

    else if( !isset( $_POST[\'meta_box_nonce\'] ) || !wp_verify_nonce( $_POST[\'meta_box_nonce\'], \'my_meta_box_nonce\' ) ) 
        return; 

    else if( !current_user_can( \'edit_post\' ) ) 
        return $post_id; 

    else{
        update_post_meta($post_id, "isprpid",$_POST["isprp_id"]);
        update_post_meta($post_id, "isprpmember",$_POST["isprp_member"]);
    }
}


function change_columns($cols){
    $cols =array(       
        \'cb\' => \'<input type="checkbox" />\',
        \'title\'=>(\'Name\'),
        \'isprpid\' => __(\'ID\',\'trans\'),
        \'isprpmember\' =>__(\'Membership\',\'trans\')        
    );

    return $cols;
}

function custom_columns($column,$post_id){
    switch ($column){
    case \'isprpid\':
        $isprpid = get_post_meta( $post_id, \'isprpid\', true);
       echo \'<a href="\' . $isprpid . \'">\' . $isprpid. \'</a>\';
       break;
    case \'isprpmember\':
        $isprpmember = get_post_meta( $post_id, \'isprpmember\', true);
       echo \'<a href="\' . $isprpmember . \'">\' . $isprpmember. \'</a>\';
       break;
    }
}