<?php
/**
 * Filter the except length to 20 characters.
 *
 * @param int $length Excerpt length.
 * @return int (Maybe) modified excerpt length.
 */
function wpdocs_custom_excerpt_length( $length ) {
    return 150;
}
add_filter( 'excerpt_length', 'wpdocs_custom_excerpt_length', 300 );

/**
 * Filter the excerpt "read more" string.
 *
 * @param string $more "Read more" excerpt string.
 * @return string (Maybe) modified "read more" excerpt string.
 */
function wpdocs_excerpt_more( $more ) {
    return '......';
}
add_filter( 'excerpt_more', 'wpdocs_excerpt_more' );

// 支持自定义侧栏
function theme_slug_widgets_init() {
    register_sidebar( array(
        'name' => __( 'Main Sidebar', 'theme-slug' ),
        'id' => 'sidebar-1',
        'description' => __( 'Widgets in this area will be shown on all posts and pages.', 'theme-slug' ),
        'before_widget' => '<li id="%1$s" class="widget %2$s">',
        'after_widget'  => '</li>',
        'before_title'  => '<h2 class="widgettitle">',
        'after_title'   => '</h2>',
    ) );
}

add_action( 'widgets_init', 'theme_slug_widgets_init' );

add_theme_support( 'post-thumbnails' );