Regular Expressions 101

Pro

robert the literal text robert (case sensitive)

Group 1([^p]*(?:p(?!almer)[^p]*)*)

Negated Character Class[^p]*

*matches any number of characters outside the set below:

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

Non-Capturing Group(?:p(?!almer)[^p]*)*

*repeats the group contents below any number of times:

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

Negative Lookahead(?!almer)

almerthe literal text almer (case sensitive)

Negated Character Class[^p]*

*matches any number of characters outside the set below:

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

palmer sent for the boatthe literal text palmer sent for the boat (case sensitive)

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

Regular Expression

robert ([^p]*(?:p(?!almer)[^p]*)*) palmer sent for the boat

New

Match
robert eric palmer sent for the boat
robert eric william palmer sent for the boat

No match
robert eric palmer palmer sent for the boat
robert eric william palmer palmer sent for the boat

Extraction

Match
robert eric palmer sent for the boat
robert eric william palmer sent for the boat

No match
robert eric palmer palmer sent for the boat
robert eric william palmer palmer sent for the boat