我真的被困在这一点上了-下面是这篇文章：

How to override parent functions in child themes

我不知道如何重写二十个十的set\\u post\\u thumbnail\\u size（）函数。我在下面列出了我正在执行的其他重写的代码，但当我将其添加到函数twentyten\\u child\\u theme\\u setup（）时，什么都没有发生：

set_post_thumbnail_size( array(100,100) , array("class" => "alignleft post_thumbnail"), true );

我在循环中插入缩略图，如下所示：

<?php if ( function_exists("has_post_thumbnail") && has_post_thumbnail() ) {
the_post_thumbnail(array(100,100), array("class" => "alignleft post_thumbnail"));
} else { ?>
<img src="<?php echo bloginfo(\'stylesheet_directory\'); ?>/images/thumb-default.jpg" alt="thumb-default" width="100" height="100" />
<?php } ?>

下面是我的函数-有人能帮我重写这个讨厌的函数吗？

谢谢

osu

function twentyten_child_theme_setup() {

    // OVERRIDE SIDEBAR GENERATION!
    function osu_twentyten_widgets_init() {
        // Siedbar 1, located on LHS sidebar
        register_sidebar( array(
            \'name\' => __( \'Primary Widget Area\', \'twentyten-child\' ),
            \'id\' => \'primary-widget-area\',
            \'description\' => __( \'The primary widget area where the navigation goes\', \'twentyten-child\' ),
            \'before_widget\' => \'<li id="%1$s" class="widget-container %2$s">\',
            \'after_widget\' => \'</li>\',
            \'before_title\' => \'<h3 class="widget-title">\',
            \'after_title\' => \'</h3>\',
        ) );
        // Area 2, located on RHS sidebar
        register_sidebar( array(
            \'name\' => __( \'Secondary Widget Area\', \'twentyten-child\' ),
            \'id\' => \'secondary-widget-area\',
            \'description\' => __( \'The secondary widget area\', \'twentyten-child\' ),
            \'before_widget\' => \'<li id="%1$s" class="widget-container %2$s">\',
            \'after_widget\' => \'</li>\',
            \'before_title\' => \'<h3 class="widget-title">\',
            \'after_title\' => \'</h3>\',
        ) );
    }
    /* Deregister sidebar in parent */
    remove_action( \'widgets_init\', \'twentyten_widgets_init\' );
    /** Register sidebars by running twentyten_widgets_init() on the widgets_init hook. */
    add_action( \'widgets_init\', \'osu_twentyten_widgets_init\' );

    // OVERRIDE EXCERPT READ MORE LINK
    function osu_readon_link() {
        return \' <a href="\'. get_permalink() . \'" class="readmore">\' . __( \'Read More\', \'twentyten-child\' ) . \'</a>\';
    }
    // Function to override
    function osu_twentyten_custom_excerpt_more( $output ) {
        if ( has_excerpt() && ! is_attachment() ) {
            $output .= osu_readon_link();
        }
        return $output;
    }
    remove_filter( \'get_the_excerpt\', \'twentyten_custom_excerpt_more\' );
    add_filter( \'get_the_excerpt\', \'osu_twentyten_custom_excerpt_more\' );

}
/* IMPORTANT: Run the code for parent function overrides (involving hooks and filters) after theme setup! */
add_action( \'after_setup_theme\', \'twentyten_child_theme_setup\' );