从帖子中提取第一张图片（Wordpress）

Posted 2021-02-25

function get_image_src($posti = null) {
if (!$posti)
	global $post;
else
	$post->post_content = $posti;
 
$the_content = $post->post_content;
$pattern = '!<img.*?src="(.*?)"!';
preg_match_all($pattern, $the_content, $matches);
$image_src = $matches['1'][0];
return $image_src;
}