Regular Expressions 101

Positive Lookbehind(?<=utm_campaign=\w*)

utm_campaign=the literal text utm_campaign= (case sensitive)

\w*any word character, repeated any number of times

Negated Character Class[^_]+

+matches at least one character outside the set below:

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?<=utm_campaign=\w*)[^_]+

New

www.sitename.com.au/landing-page?utm_source=facebook&utm_medium=social&utm_campaign=fruit_apples_kids