Regular Expressions 101

Explanation

Pro

^start of line

Group 1(0(,\d{0,2})?|-?[1-9]\d*(,\d{1,2})?|-0,(0[1-9]|[1-9]\d?))

1st Alternative0(,\d{0,2})?

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Group 2(,\d{0,2})?

?repeats the group contents below at most once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d{0,2}a digit, repeated between 0 and 2 times

2nd Alternative-?[1-9]\d*(,\d{1,2})?

-?optionally matches the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\d*a digit, repeated any number of times

Group 3(,\d{1,2})?

?repeats the group contents below at most once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d{1,2}a digit, repeated between 1 and 2 times

3rd Alternative-0,(0[1-9]|[1-9]\d?)

-0,the literal text -0,

Group 4(0[1-9]|[1-9]\d?)

1st Alternative0[1-9]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative[1-9]\d?

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\d?optionally matches a digit

$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

25 tokens

Regular Expression

^(0(,\d{0,2})?|-?[1-9]\d*(,\d{1,2})?|-0,(0[1-9]|[1-9]\d?))$

New

Deverá aceitar:

0
0,
0,0
0,00
0,010
0,00000000000000000000002
0,01
0,99
0,1
1234567890,99
-1234567890,99
-0,01
-0,99
1,00
-1,00
-1,012


Não poderá aceitar:

-0
-0,
-0,00
-,01 a -,99
//Sequencia vazio
01,00
01
0012

Extraction

Deverá aceitar:

0
0,
0,0
0,00
0,010
0,00000000000000000000002
0,01
0,99
0,1
1234567890,99
-1234567890,99
-0,01
-0,99
1,00
-1,00
-1,012


Não poderá aceitar:

-0
-0,
-0,00
-,01 a -,99
//Sequencia vazio
01,00
01
0012