Regular Expressions 101

Explanation
Pro

^start of line

Group 1(0|\+44)

1st Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2nd Alternative\+44

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

44the literal text 44

Group 2(.*)

.*any character (except for line terminators), repeated any number of times

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.

25 tokens

^(0|\+44)(.*)

New

01234 123 456
+44 1234 123 456
+44 (0) 1234 123 456

<a href="tel:+44 $2>$2</a>

01234 123 456
+44 1234 123 456
+44 (0) 1234 123 456