Regular Expressions 101

Explanation

Pro

^start of line

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

Group 1(\d+([,\.]\d+)?Y)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 2([,\.]\d+)?

?repeats the group contents below at most once:

Character Class[,\.]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Ythe literal Y (89₁₀ / 131₈ / 59₁₆) (case sensitive)

Group 3(\d+([,\.]\d+)?M)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 4([,\.]\d+)?

?repeats the group contents below at most once:

Character Class[,\.]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

Group 5(\d+([,\.]\d+)?D)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 6([,\.]\d+)?

?repeats the group contents below at most once:

Character Class[,\.]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Dthe literal D (68₁₀ / 104₈ / 44₁₆) (case sensitive)

Group 7(T(\d+([,\.]\d+)?H)?(\d+([,\.]\d+)?M)?(\d+([,\.]\d+)?S)?)?

?repeats the group contents below at most once:

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

Group 8(\d+([,\.]\d+)?H)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 9([,\.]\d+)?

?repeats the group contents below at most once:

Character Class[,\.]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Hthe literal H (72₁₀ / 110₈ / 48₁₆) (case sensitive)

Group 10(\d+([,\.]\d+)?M)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 11([,\.]\d+)?

?repeats the group contents below at most once:

Character Class[,\.]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

Group 12(\d+([,\.]\d+)?S)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Group 13([,\.]\d+)?

?repeats the group contents below at most once:

Character Class[,\.]

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

$end of line

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

26 tokens

Regular Expression

^P(\d+([,\.]\d+)?Y)?(\d+([,\.]\d+)?M)?(\d+([,\.]\d+)?D)?(T(\d+([,\.]\d+)?H)?(\d+([,\.]\d+)?M)?(\d+([,\.]\d+)?S)?)?$

New

P1Y
PT35M
P0.5Y
P4W

Substitution

P1Y
PT35M
P0.5Y
P4W