如何提取src值并用php解析出一个ID号

Question

Im using wordpress and I pass a custom field through. The data ends up looking like this, but it is different urls sometimes:

$embed = '<iframe width="560" height="315" src="//www.youtube.com/embed/abcde12345" frameborder="0" allowfullscreen></iframe>'

I am wondering how I can pull the src value out and how to store the text bolded below within that url.

src="//www.youtube.com/embed/abcde12345"

I did a search and saw some people recommended using eval() but I tried reading about it and couldn't understand the documentation.

Answer 1

$src = array();
preg_match('(src="//www.youtube.com/embed/(.*?)")e', $embed, $src);
echo $src[1];