Regular Expressions 101

Pro

1st Alternative^[0]*([1][1][0|2|5])

^start of line

Character Class[0]*

*matches any number of characters from the set below:

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Group 1([1][1][0|2|5])

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0|2|5]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

2nd Alternative([1][1][6]\d{3})

Group 2([1][1][6]\d{3})

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[6]

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

\d{3}a digit, repeated exactly 3 times

3rd Alternative([1][1][8][1-9]{2})

Group 3([1][1][8][1-9]{2})

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[8]

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

Character Class[1-9]{2}

{2}matches exactly 2 characters from the set below:

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

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

^[0]*([1][1][0|2|5])|([1][1][6]\d{3})|([1][1][8][1-9]{2})