WordPress 4.4新增了不少功能，之前也介绍过禁用REST API的方法，现在再来介绍一下禁用embeds的方法，也就是移除页面输出的wp-embed.min.js文件。wordpress 4.4的embeds功能可以允许更方便的引用第三方资源，具体可以搜下oEmbed，这里不细说了。

禁用embeds其实还是比较复杂（代码比较多），官方甚至为此开发了一个插件，大家可以使用插件来禁用：Disable Embeds，如果不想使用插件，那就将插件里面的代码复制到主题的functions.php文件即可。

代码如下：

function disable_embeds_init() {

/* @var WP $wp */

global $wp;

// Remove the embed query var.

$wp->public_query_vars = array_diff( $wp->public_query_vars, array(

'embed',

) );

// Remove the REST API endpoint.

remove_action( 'rest_api_init', 'wp_oembed_register_route' );

// Turn off

add_filter( 'embed_oembed_discover', '__return_false' );

// Don't filter oEmbed results.

remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 );

// Remove oEmbed discovery links.

remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );

// Remove oEmbed-specific JavaScript from the front-end and back-end.

remove_action( 'wp_head', 'wp_oembed_add_host_js' );

add_filter( 'tiny_mce_plugins', 'disable_embeds_tiny_mce_plugin' );

// Remove all embeds rewrite rules.

add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

}

add_action( 'init', 'disable_embeds_init', 9999 );

/**

* Removes the 'wpembed' TinyMCE plugin.

*

* @since 1.0.0

*

* @param array $plugins List of TinyMCE plugins.

* @return array The modified list.

*/

function disable_embeds_tiny_mce_plugin( $plugins ) {

return array_diff( $plugins, array( 'wpembed' ) );

}

/**

* Remove all rewrite rules related to embeds.

*

* @since 1.2.0

*

* @param array $rules WordPress rewrite rules.

* @return array Rewrite rules without embeds rules.

*/

function disable_embeds_rewrites( $rules ) {

foreach ( $rules as $rule => $rewrite ) {

if ( false !== strpos( $rewrite, 'embed=true' ) ) {

unset( $rules[ $rule ] );

}

}

return $rules;

}

/**

* Remove embeds rewrite rules on plugin activation.

*

* @since 1.2.0

*/

function disable_embeds_remove_rewrite_rules() {

add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

flush_rewrite_rules();

}

register_activation_hook( __FILE__, 'disable_embeds_remove_rewrite_rules' );

/**

* Flush rewrite rules on plugin deactivation.

*

* @since 1.2.0

*/

function disable_embeds_flush_rewrite_rules() {

remove_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

flush_rewrite_rules();

}

register_deactivation_hook( __FILE__, 'disable_embeds_flush_rewrite_rules' );

function disable_embeds_init() {

/* @var WP $wp */

global $wp;

// Remove the embed query var.

$wp->public_query_vars = array_diff( $wp->public_query_vars, array(

'embed',

) );

// Remove the REST API endpoint.

remove_action( 'rest_api_init', 'wp_oembed_register_route' );

// Turn off

add_filter( 'embed_oembed_discover', '__return_false' );

// Don't filter oEmbed results.

remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 );

// Remove oEmbed discovery links.

remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );

// Remove oEmbed-specific JavaScript from the front-end and back-end.

remove_action( 'wp_head', 'wp_oembed_add_host_js' );

add_filter( 'tiny_mce_plugins', 'disable_embeds_tiny_mce_plugin' );

// Remove all embeds rewrite rules.

add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

}

add_action( 'init', 'disable_embeds_init', 9999 );

/**

* Removes the 'wpembed' TinyMCE plugin.

*

* @since 1.0.0

*

* @param array $plugins List of TinyMCE plugins.

* @return array The modified list.

*/

function disable_embeds_tiny_mce_plugin( $plugins ) {

return array_diff( $plugins, array( 'wpembed' ) );

}

/**

* Remove all rewrite rules related to embeds.

*

* @since 1.2.0

*

* @param array $rules WordPress rewrite rules.

* @return array Rewrite rules without embeds rules.

*/

function disable_embeds_rewrites( $rules ) {

foreach ( $rules as $rule => $rewrite ) {

if ( false !== strpos( $rewrite, 'embed=true' ) ) {

unset( $rules[ $rule ] );

}

}

return $rules;

}

/**

* Remove embeds rewrite rules on plugin activation.

*

* @since 1.2.0

*/

function disable_embeds_remove_rewrite_rules() {

add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

flush_rewrite_rules();

}

register_activation_hook( __FILE__, 'disable_embeds_remove_rewrite_rules' );

/**

* Flush rewrite rules on plugin deactivation.

*

* @since 1.2.0

*/

function disable_embeds_flush_rewrite_rules() {

remove_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );

flush_rewrite_rules();

}

register_deactivation_hook( __FILE__, 'disable_embeds_flush_rewrite_rules' );

这里不得不吐槽下wordpress，如果每次升级都增加一些功能，并且要在页面输出内容，那必然会影响网站的打开速度，更坑的是如果禁用需要安装插件，那么每次升级都要安装几个插件？

在wordpress的功能介绍文章下面也有不少用户提出这个问题，有兴趣的童鞋可以去看下