判断 WordPress 文章中有特定短代码时加载脚本

function zm_has_shortcode( $posts ) {

	if ( empty($posts) )

		return $posts;

	$found = false;

	foreach ( $posts as $post ) {

		if ( stripos($post->post_content, '[my_shortcode]') )

			$found = true;

			break;

	}

	if ( $found ) {

		wp_register_script( 'my_script', get_template_directory_uri() . '/js/my_script.js', array(), version, false );

		wp_enqueue_script('my_script');

	}

	return $posts;

}

add_action('the_posts', 'zm_has_shortcode');