Regular Expressions 101

Pro

Positive Lookbehind(?<=([^\?\&\=]+=)([^\&\=]+))

Group 1([^\?\&\=]+=)

Negated Character Class[^\?\&\=]+

+matches at least one character outside the set below:

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

\&the literal & (38₁₀ / 46₈ / 26₁₆)

\=the literal = (61₁₀ / 75₈ / 3D₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Group 2([^\&\=]+)

Negated Character Class[^\&\=]+

+matches at least one character outside the set below:

\&the literal & (38₁₀ / 46₈ / 26₁₆)

\=the literal = (61₁₀ / 75₈ / 3D₁₆)

Group 3(\&\1)

\&the literal & (38₁₀ / 46₈ / 26₁₆)

\1the text saved by group 1

Global pattern flags

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

Detailed match information will be displayed here automatically.

26 tokens

(?<=([^\?\&\=]+=)([^\&\=]+))(\&\1)

New

?price=5-10&price=10-15&price=15-20&sport=cricket&sport=boxing&sport=swimming&food=choclate&food=biscuits

~

?price=5-10&price=10-15&price=15-20&sport=cricket&sport=boxing&sport=swimming&food=choclate&food=biscuits