Category "explode"

In PHP, which is faster: preg_split or explode?

Which is faster when using it to extract keywords in a search query in php: $keyword = preg_split('/[\s]+/', $_GET['search']); or $keyword = explode(' ', $_GET

Explode not working properly with dash

We have this string : "Il Responsabile della Sicurezza nelle gallerie – 1° PARTE" and we want to get two part of it: Il Responsabile della Sicurezza