[Help!] preg_match_all

can someone tell me what this script mean ?

preg_match_all("/superdesc(.*?)Starting/s", $d, $M);

Code (markup):

 

it uses regEx to match "/superdesc(.*?)Starting/s" in the provided string $d, and puts all the matches into the array $M

 

can you give me detail whata mean : "/superdesc(.*?)Starting/s"

 

/superdesc(.*?)Starting/s

/ = delimiter
( = Opens the subpattern
. = match any character except new line
*? = Match 0 or more times, but as few times as possible.
) = Closes the subpattern
/ = delimiter
s = modifier

Delimiter = any character that opens/closes the pattern (cannot be used withing the pattern without being escaped)
Subpattern = what it says
Modifier = when /s is used, a dot metacharacter (.) in the pattern matches all characters, including newlines. Without it, newlines are excluded.

Do you have a particular pattern you are trying to work out?

 

thanks ahowell.
rep added.