Regular Expressions 101

Explanation
Pro

\ba Unicode word boundary

Positive Lookahead(?=[A-Z-0-9]*[A-Z])

Character Class[A-Z-0-9]*

*matches any number of characters from the set below:

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Character Class[A-Z]

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

Positive Lookahead(?=[A-Z-0-9]*[0-9])

Character Class[A-Z-0-9]*

*matches any number of characters from the set below:

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

Character Class[0-9]

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

Character Class[A-Z0-9]+

+matches at least one character from the set below:

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

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

\ba Unicode word boundary

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

\b(?=[A-Z-0-9]*[A-Z])(?=[A-Z-0-9]*[0-9])[A-Z0-9]+\b

some blah blah blah with id X12354, id 1234Z and id 12P555. All are 50 years old.

some blah blah blah with id X12354, id 1234Z and id 12P555. All are 50 years old.