Regular Expressions 101

Explanation

Pro

1st Alternative^([1-5]|6[0-5])

^start of line

Group 1([1-5]|6[0-5])

1st Alternative[1-5]

Character Class[1-5]

1-5one character from 1 (49₁₀) to 5 (53₁₀)

2nd Alternative6[0-5]

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

2nd Alternative66.0($|(\.[0-5]))

66the literal text 66

.any character (except for line terminators)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Group 2($|(\.[0-5]))

1st Alternative$

$end of line

2nd Alternative(\.[0-5])

Group 3(\.[0-5])

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

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

Detailed match information will be displayed here automatically.

25 tokens

^([1-5]|6[0-5])|66.0($|(\.[0-5]))

66.0.1
66.0.3
66.0.