regex101: PCRE (Legacy) Match Workspace

^start of line

Non-Capturing Group(?:\d+(?:\.[\d{1,2}]*)?|\.[\d{1,2}]+)

1st Alternative\d+(?:\.[\d{1,2}]*)?

\d+a digit, repeated at least once

Non-Capturing Group(?:\.[\d{1,2}]*)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\d{1,2}]*

*matches any number of characters from the set below:

\da digit

{the literal { (123₁₀ / 173₈ / 7B₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

2nd Alternative\.[\d{1,2}]+

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\d{1,2}]+

+matches at least one character from the set below:

\da digit

{the literal { (123₁₀ / 173₈ / 7B₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Non-Capturing Group(?:,[\s]?(?:\d+(?:\.[\d{1,2}]*)?|\.[\d{1,2}]+))*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Character Class[\s]?

?matches at most one character from the set below:

\sany whitespace character

Non-Capturing Group(?:\d+(?:\.[\d{1,2}]*)?|\.[\d{1,2}]+)

1st Alternative\d+(?:\.[\d{1,2}]*)?

\d+a digit, repeated at least once

Non-Capturing Group(?:\.[\d{1,2}]*)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\d{1,2}]*

*matches any number of characters from the set below:

\da digit

{the literal { (123₁₀ / 173₈ / 7B₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

2nd Alternative\.[\d{1,2}]+

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\d{1,2}]+

+matches at least one character from the set below:

\da digit

{the literal { (123₁₀ / 173₈ / 7B₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

$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

Search reference

Regular Expression

^(?:\d+(?:\.[\d{1,2}]*)?|\.[\d{1,2}]+)(?:,[\s]?(?:\d+(?:\.[\d{1,2}]*)?|\.[\d{1,2}]+))*$

New

0
12345
12345,23456,34567,45678
12345,23456,34567,45678
12345, 23456, 34567,4567
12345, 23456, 34567, 4567,
12345, 23456, 34567,   4567,
1,,2,
1.3345345
1.2, 1.3
2.0124
2.
0

Regular Expressions 101

Regular Expression

Extraction