Regular Expressions 101

Group 1(20[0-9]{2}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2})

20the literal text 20

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 2((-|\+)[0-9]{2}:[0-9]{2}|)

1st Alternative(-|\+)[0-9]{2}:[0-9]{2}

Group 3(-|\+)

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

2nd Alternative — matches an empty string

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 4(\w+\/*\w*)

\w+any word character, repeated at least once

\/*the literal / (47₁₀ / 57₈ / 2F₁₆) , repeated any number of times

\w*any word character, repeated any number of times

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(20[0-9]{2}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2})((-|\+)[0-9]{2}:[0-9]{2}|)\[(\w+\/*\w*)]

New

2015-08-30T16:00[America/Phoenix]
2015-08-30T16:00[America]
2015-08-30T16:00-07:00[America/Phoenix]
2015-08-30T16:00+07:00[America/Phoenix]
2015-08-30T16:00-07:00[America]
2015-08-30T16:00+07:00[America]

Regular Expression

Extraction