Regex

Pattern	Legend	Example match
\w	Any alphanumeric character, including underscores	a or 0 or _
\d	Any digit	1 or 2 or 4
\s	Any whitespace character	' '
+	One or more (greedy) of the pattern or character	\d+ matches 476373
\.	The . character	.
*	Zero or more (greedy) of the character or pattern	\d* matches 03289 and ''
|	Either the first pattern, or the next, or the next (like OR)	\d|\w matches 0 or a
[] or ()	Character classes (defining what you expect to see in one character space) and character groupings (defining what you expect to see in a group)	A matches [A-C] or (A|B|C)
-	Binds character groups	[0-9]+ matches \d+