Regular Expressions 101

Explanation

Pro

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

\ba Unicode word boundary

Non-Capturing Group(?:(?P<g0>1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6[\W_]*7[\W_]*8)|(?P<g1>a[\W_]*s[\W_]*1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6))

1st Alternative(?P<g0>1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6[\W_]*7[\W_]*8)

Group g0(?P<g0>1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6[\W_]*7[\W_]*8)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

2nd Alternative(?P<g1>a[\W_]*s[\W_]*1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6)

Group g1(?P<g1>a[\W_]*s[\W_]*1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6)

athe literal a (97₁₀ / 141₈ / 61₁₆) (case insensitive)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Character Class[\W_]*

*matches any number of characters from the set below:

\Wany character that is not a Unicode word character

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

\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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?i)\b(?:(?P<g0>1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6[\W_]*7[\W_]*8)|(?P<g1>a[\W_]*s[\W_]*1[\W_]*2[\W_]*3[\W_]*4[\W_]*5[\W_]*6))\b

New

 sample 123 45 678 text
 sample as123456 text
 sample As123 456
 sample bas123456 text    NA
 sample bas123 456ts text

Extraction

 sample 123 45 678 text
 sample as123456 text
 sample As123 456
 sample bas123456 text    NA
 sample bas123 456ts text