preg_match：如果有html实体怎么办？

Question

I got this function:

preg_match("/öppet/iu", $string);

What if the "ö" is written as a html entity? Like this: ö or Ö Is there a way to find them as well?

Answer 1

Sure, just decode HTML entities before matching:

preg_match("/öppet/iu", html_entity_decode($string));

This has the benefit of working for other characters as well, e.g. if you want to match ä too at some point in the future.