反斜杠之间的preg_match_all

Question

trying to extract data between two backslashes

read that a literal backslash must be 4... Why 4 Backslashes? Yes, it seems crazy to have to use 4 backslashes just to match one literal backslash!

but not working:

preg_match_all("/imgurl75/\\\/(.*?)/\\\//is", $data, $matches); 

trying to extract data between both backslahs \\ imgurl75\\ http://www.example.com/dir/dir/img.ext \\

Answer 1

preg_match_all("#imgurl75\\\\(.*)\\\\#", $data, $matches);