WordPress函数 has_shortcode 判断是否包含简码/短代码

if( has_shortcode( $content, 'gallery123' ) ){
	……
}

$content
(string) (required) 要检测的内容
Default: None

$tag
(string) (required) 指定的 Shortcode
Default: None

$content = 'This is some text, (perhaps pulled via $post->post_content). It has a [gallery123] shortcode.';

if( has_shortcode( $content, 'gallery123' ) ) {
	// 内容中包含 [gallery123] 简码，将返回 true。
}
?>

function custom_shortcode_scripts() {
	global $post;
	if( is_a( $post, 'WP_Post' ) && has_shortcode( $post->post_content, 'custom-shortcode') ) {
		wp_enqueue_script( 'custom-script');
	}
}
add_action( 'wp_enqueue_scripts', 'custom_shortcode_scripts');