Regular Expressions 101

Explanation

Pro

Group 1(^|[^A-Z]+)

1st Alternative^

^start of string

2nd Alternative[^A-Z]+

Negated Character Class[^A-Z]+

+matches at least one character outside the set below:

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

Group 2((P[. ]*(O|0)[. ]*(B(((O|0)?X)|IN)?)?)|(P((O|0)ST(AL)?)?[. ]*(((O|0)FF(ICE)?)|(B(((O|0)?X)|IN)))))

1st Alternative(P[. ]*(O|0)[. ]*(B(((O|0)?X)|IN)?)?)

Group 3(P[. ]*(O|0)[. ]*(B(((O|0)?X)|IN)?)?)

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case insensitive)

Character Class[. ]*

*matches any number of characters from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 4(O|0)

1st AlternativeO

Othe literal O (79₁₀ / 117₈ / 4F₁₆) (case insensitive)

2nd Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[. ]*

*matches any number of characters from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 5(B(((O|0)?X)|IN)?)?

?repeats the group contents below at most once:

Bthe literal B (66₁₀ / 102₈ / 42₁₆) (case insensitive)

Group 6(((O|0)?X)|IN)?

?repeats the group contents below at most once:

1st Alternative((O|0)?X)

Group 7((O|0)?X)

Group 8(O|0)?

?repeats the group contents below at most once:

1st AlternativeO

Othe literal O (79₁₀ / 117₈ / 4F₁₆) (case insensitive)

2nd Alternative0

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Xthe literal X (88₁₀ / 130₈ / 58₁₆) (case insensitive)

2nd AlternativeIN

INthe literal text IN (case insensitive)

2nd Alternative(P((O|0)ST(AL)?)?[. ]*(((O|0)FF(ICE)?)|(B(((O|0)?X)|IN))))

Group 9(P((O|0)ST(AL)?)?[. ]*(((O|0)FF(ICE)?)|(B(((O|0)?X)|IN))))

Pthe literal P (80₁₀ / 120₈ / 50₁₆) (case insensitive)

Group 10((O|0)ST(AL)?)?

?repeats the group contents below at most once:

Group 11(O|0)

1st AlternativeO

Othe literal O (79₁₀ / 117₈ / 4F₁₆) (case insensitive)

2nd Alternative0

STthe literal text ST (case insensitive)

Group 12(AL)?

Character Class[. ]*

Group 13(((O|0)FF(ICE)?)|(B(((O|0)?X)|IN)))

Negated Character Class[^A-Z]

Global pattern flags

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(^|[^A-Z]+)((P[. ]*(O|0)[. ]*(B(((O|0)?X)|IN)?)?)|(P((O|0)ST(AL)?)?[. ]*(((O|0)FF(ICE)?)|(B(((O|0)?X)|IN)))))[^A-Z]

Regular Expression

Substitution