Regular Expressions 101

Pro

^start of line

Character Class[A-Z]{3}

{3}matches exactly 3 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group 1(([1-9]{4})|([1-9]{1}[A-Z{1}][1-9]{2}))

1st Alternative([1-9]{4})

Group 2([1-9]{4})

Character Class[1-9]{4}

{4}matches exactly 4 characters from the set below:

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

2nd Alternative([1-9]{1}[A-Z{1}][1-9]{2})

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

Character Class[1-9]{1}

{1}matches one character from the set below:

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

Character Class[A-Z{1}]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

Character Class[1-9]{2}

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

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

$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

Detailed match information will be displayed here automatically.

26 tokens

^[A-Z]{3}(([1-9]{4})|([1-9]{1}[A-Z{1}][1-9]{2}))$

ABC1D23
ABC1Z23
ABC1ZA3
AB11Z23
ABC·1234
ABC1234
asasdasdads
1231321321
111ab12
ABC1423
ABC1423ABC
ABC
1234
12345
123456
12