Regular Expressions 101

Character Class[A-Z]{2}

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

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

\s?optionally matches a Unicode whitespace character

Group 1(\d{2})

\d{2}a Unicode decimal digit, repeated exactly 2 times

\s?optionally matches a Unicode whitespace character

Group 2([A-Z]{2})

Character Class[A-Z]{2}

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

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

\s?optionally matches a Unicode whitespace character

Group 3(\d{4})

\d{4}a Unicode decimal digit, repeated exactly 4 times

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.

Search reference

Regular Expression

[A-Z]{2}\s?(\d{2})\s?([A-Z]{2})\s?(\d{4})

GH 12RZ 9901