gistfile1.txt

<?php
/**
 * Plugin Name: Disable Embeds for others
 * Description: Don't want people can embed your posts?
 * Version:     1.0
 * Author:      Julio Potier
 * Author URI:  https://wp-rocket.me
 * License:     GPLv2+
 *
 */

function disable_embeds_init() {

	// Remove oEmbed discovery links.
	remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );

	// Remove all embeds rewrite rules.
	add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
}

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

/**
 * 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' );