Regular Expressions 101

Pro

1st Alternative(?<=[&\\?])password=[^&]*&?

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

Character Class[&\\?]

&the literal & (38₁₀ / 46₈ / 26₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

password=the literal text password= (case sensitive)

Negated Character Class[^&]*

*matches any number of characters outside the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

&?optionally matches the literal & (38₁₀ / 46₈ / 26₁₆)

2nd Alternative&password=[^&]*

&password=the literal text &password= (case sensitive)

Negated Character Class[^&]*

*matches any number of characters outside the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

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

(?<=[&\\?])password=[^&]*&?|&password=[^&]*

https://openapi.knx.org/v1/user/login?username=KNXpassword=0&passwords=250&63&password=n7psderwp&param=test

https://openapi.knx.org/v1/user/login?username=KNXpassword=0&passwords=250&63&password=n7psderwp&param=test