使用Shortcode获取自定义字段的值

Posted 2021-02-17

Get the Value of the Custom Field Using the Shortcode

function shortcode_field($atts){
		extract(shortcode_atts(array(
		'post_id' => NULL,
		), $atts));
		if(!isset($atts[0])) return;
		$field = esc_attr($atts[0]);
 
		global $post;
 
		if(gettype($post) == "array"){
			$post_id = 1*(NULL === $post_id) ? $post['ID'] : $post_id;
		} else {
			$post_id = 1*(NULL === $post_id) ? $post->ID : $post_id;
		}
 
		$answer = get_post_meta($post_id, $field, true);
		$answer = $answer;
 
		return $answer;
	}
	add_shortcode('field', 'shortcode_field');