Regular Expressions 101

Pro

Group 1(\$|£|$|£)

1st Alternative\$

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

2nd Alternative£

£the literal £ (163₁₀ / 243₈ / A3₁₆)

3rd Alternative$

$the literal text $

4th Alternative£

£the literal text £

Group 2(\d+(?:\.\d+)?)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\ba Unicode word boundary

Negative Lookahead(?!\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

27 tokens

(\$|£|&#36;|&#163;)(\d+(?:\.\d+)?)\b(?!\.)

$100
$100.5
&#36;100
&#36;100.6
&#163;200
&#163;200.6

&#163;200.15.
&#163;200.6.6.6.6