regex101: Match Ports

^start of line

Group 1([^0-9]*\b(([1-9]|1[0-9]|22|2[4-9]|[3-9][0-9]|1[0-2][0-9]|13[0-6]|1[4-9][0-9]|[2-9][0-9][0-8]|[1-9][0-9]{3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])\b[^0-9]*)*$)

Negated Character Class[^0-9]*

*matches any number of characters outside the set below:

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

\ban ASCII word boundary

Group 2(([1-9]|1[0-9]|22|2[4-9]|[3-9][0-9]|1[0-2][0-9]|13[0-6]|1[4-9][0-9]|[2-9][0-9][0-8]|[1-9][0-9]{3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])\b[^0-9]*)*

*repeats the group contents below any number of times:

Group 3([1-9]|1[0-9]|22|2[4-9]|[3-9][0-9]|1[0-2][0-9]|13[0-6]|1[4-9][0-9]|[2-9][0-9][0-8]|[1-9][0-9]{3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])

1st Alternative[1-9]

Character Class[1-9]

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

2nd Alternative1[0-9]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-9]

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

3rd Alternative22

22the literal text 22

4th Alternative2[4-9]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[4-9]

4-9one character from 4 (52₁₀) to 9 (57₁₀)

5th Alternative[3-9][0-9]

Character Class[3-9]

3-9one character from 3 (51₁₀) to 9 (57₁₀)

Character Class[0-9]

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

6th Alternative1[0-2][0-9]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

Character Class[0-9]

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

7th Alternative13[0-6]

13the literal text 13

Character Class[0-6]

0-6one character from 0 (48₁₀) to 6 (54₁₀)

8th Alternative1[4-9][0-9]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[4-9]

4-9one character from 4 (52₁₀) to 9 (57₁₀)

Character Class[0-9]

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

9th Alternative[2-9][0-9][0-8]

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

Character Class[0-9]

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

Character Class[0-8]

10th Alternative[1-9][0-9]{3}

11th Alternative[1-5][0-9]{4}

12th Alternative6[0-4][0-9]{3}

13th Alternative65[0-4][0-9]{2}

14th Alternative655[0-2][0-9]

15th Alternative6553[0-5]

\ban ASCII word boundary

Negated Character Class[^0-9]*

$end of line

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

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

Search reference

Regular Expression

^([^0-9]*\b(([1-9]|1[0-9]|22|2[4-9]|[3-9][0-9]|1[0-2][0-9]|13[0-6]|1[4-9][0-9]|[2-9][0-9][0-8]|[1-9][0-9]{3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])\b[^0-9]*)*$)

Unit Tests

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