①问题：

仪表盘里【设置-常规】，滑倒最下面的“ICP备案号”在5.0.0及以后的wordpress版本里没有显示。

②解决方案：

• 文件wp-content/languages/zh_CN.php缺失，内容在后面附上。
• 在wp-config.php中添加define('WP_ZH_CN_ICP_NUM', true);
• 在自己使用的主题的页脚文件footer.php里合适的位置加上
• 刷新仪表盘，【设置-常规】里出现了ICP备案号，填入刷新网页即可。

③附上zh_CN.php:

<?php
/**
 * WordPress China Localization Patches Collection
 */

/**
 * Legacy database options cleanup
 *
 * Cleanup of all options that were introduced pre-3.4.
 * To save time, this function is only to be called on admin pages.
 *
 * @since 3.4.0
 */
function zh_cn_l10n_legacy_option_cleanup() {
	// 3.3 series
	delete_site_option( 'zh_cn_l10n_preference_patches' );

	// 3.0.5, 3.1 series, 3.2 series
	delete_site_option( 'zh_cn_language_pack_enable_chinese_fake_oembed' );

	// 3.0.1, 3.0.2, 3.0.3, 3.0.4
	delete_site_option( 'zh_cn_language_pack_options_version' );
	delete_site_option( 'zh_cn_language_pack_enable_backend_style_modifications' );

	// awkward ones...
	delete_site_option( 'zh_cn_language_pack_enable_icpip_num_show' );
	delete_site_option( 'zh_cn_language_pack_icpip_num' );
	delete_site_option( 'zh_cn_language_pack_is_configured' );

}
add_action( 'admin_init', 'zh_cn_l10n_legacy_option_cleanup' );


/**
 * Tudou wp_embed handler
 *
 * Embed code last updated:
 *  Tue, 05 Jun 2012 22:23:03 -0400
 *
 * Feel free to submit or correct URL formats here:
 *  http://cn.wordpress.org/contact/
 *
 * @since 3.4.0
 */
function wp_embed_handler_tudou( $matches, $attr, $url, $rawattr ) {
	$embed = sprintf(
		'<embed src="http://www.tudou.com/v/%1$s/&resourceId=0_05_05_99&bid=05/v.swf" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" wmode="opaque" width="480" height="400"></embed>',
		esc_attr( $matches['video_id'] ) );

	return apply_filters( 'embed_tudou', $embed, $matches, $attr, $url, $rawattr );
}
wp_embed_register_handler( 'tudou',
	'#https?://(?:www\.)?tudou\.com/(?:programs/view|listplay/(?<list_id>[a-z0-9_=\-]+))/(?<video_id>[a-z0-9_=\-]+)#i',
	'wp_embed_handler_tudou' );


/**
 * 56.com wp_embed handler
 *
 * Embed code last updated:
 *  Tue, 05 Jun 2012 23:03:29 -0400
 *
 * Feel free to submit or correct URL formats here:
 *  http://cn.wordpress.org/contact/
 *
 * @since 3.4.0
 */
function wp_embed_handler_56com( $matches, $attr, $url, $rawattr ) {
	$matches['video_id'] = $matches['video_id1'] == '' ?
		$matches['video_id2'] : $matches['video_id1'];

	$embed = sprintf(
		"<embed src='http://player.56.com/v_%1\$s.swf'  type='application/x-shockwave-flash' width='480' height='405' allowFullScreen='true' allowNetworking='all' allowScriptAccess='always'></embed>",
		esc_attr( $matches['video_id'] ) );

	return apply_filters( 'embed_56com', $embed, $matches, $attr, $url, $rawattr );
}
wp_embed_register_handler( '56com',
	'#https?://(?:www\.)?56\.com/[a-z0-9]+/(?:play_album\-aid\-[0-9]+_vid\-(?<video_id1>[a-z0-9_=\-]+)|v_(?<video_id2>[a-z0-9_=\-]+))#i',
	'wp_embed_handler_56com' );


/**
 * Youku wp_embed handler
 *
 * Embed code last updated:
 *  Wed, 06 Jun 2012 00:36:11 -0400
 *
 * Feel free to submit or correct URL formats here:
 *  http://cn.wordpress.org/contact/
 *
 * @since 3.4.0
 */
function wp_embed_handler_youku( $matches, $attr, $url, $rawattr ) {
	$embed = sprintf(
		'<embed src="http://player.youku.com/player.php/sid/%1$s/v.swf" allowFullScreen="true" quality="high" width="480" height="400" align="middle" allowScriptAccess="always" type="application/x-shockwave-flash"></embed>',
		esc_attr( $matches['video_id'] ) );

	return apply_filters( 'embed_youku', $embed, $matches, $attr, $url, $rawattr );
}
wp_embed_register_handler( 'youku',
	'#https?://v\.youku\.com/v_show/id_(?<video_id>[a-z0-9_=\-]+)#i',
	'wp_embed_handler_youku' );


/**
 * ICP license number
 *
 * For compliance with the Telecommunications Regulations. Can be turned off
 * in wp-config.php.
 *
 * @since 3.7.0
 */
function zh_cn_l10n_settings_init() {
	if ( defined( 'WP_ZH_CN_ICP_NUM' ) && WP_ZH_CN_ICP_NUM ) {
		add_settings_field( 'zh_cn_l10n_icp_num',
			'ICP备案号',
			'zh_cn_l10n_icp_num_callback',
			'general' );
		register_setting( 'general', 'zh_cn_l10n_icp_num' );
	}
}

add_action( 'admin_init', 'zh_cn_l10n_settings_init' );

function zh_cn_l10n_icp_num_callback() {
	echo '<input name="zh_cn_l10n_icp_num" type="text" ' .
		'id="zh_cn_l10n_icp_num" value="' .
		esc_attr( get_option( 'zh_cn_l10n_icp_num' ) ) .
		'" class="regluar-text ltr" />' .
		'<p class="description">仅对WordPress自带主题有效。</p>';
}

function zh_cn_l10n_icp_num( $content ) {
	if ( defined( 'WP_ZH_CN_ICP_NUM' ) && WP_ZH_CN_ICP_NUM &&
			get_option( 'zh_cn_l10n_icp_num' ) ) {
		echo '<a href="http://www.miitbeian.gov.cn/" rel="nofollow" ' .
			'title="工业和信息化部ICP/IP地址/域名信息备案管理系统">' .
			esc_attr( get_option( 'zh_cn_l10n_icp_num' ) ) .
			 "</a>\n";
	}
}

add_action( 'twentyten_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentyeleven_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentytwelve_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentythirteen_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentyfourteen_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentyfifteen_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentysixteen_credits', 'zh_cn_l10n_icp_num' );
add_action( 'twentyseventeen_credits', 'zh_cn_l10n_icp_num' );
?>

④说明：

以上PHP文件内容来自官方4.9版本。

本文转自：

作者(Author)：Mr.Eucalypt
链接(URL)：https://blog.eluvk.cn/
来源(Source)：Eluvk