Regular Expressions 101

Explanation

Pro

\ba Unicode word boundary

Non-Capturing Group(?:wh|ho(?!urs?\b))

1st Alternativewh

whthe literal text wh (case sensitive)

2nd Alternativeho(?!urs?\b)

hothe literal text ho (case sensitive)

Negative Lookahead(?!urs?\b)

urthe literal text ur (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\ba Unicode word boundary

Character Class[a-zA-Z]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\ba Unicode word boundary

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

\b(?:wh|ho(?!urs?\b))[a-zA-Z]{1,3}\b

New

what I have to do is to love you forever. however, we only have one hour left to be together. whatttttttttt. hot. hottest.

what I have to do is to love you forever. however, we only have one hour left to be together. whatttttttttt. hot. hottest.