Regular Expressions 101

^start of line

Non-Capturing Group(?:[A-Z1-9]*0+[A-Z1-9]|([A-Z0-9]{10})$)

1st Alternative[A-Z1-9]*0+[A-Z1-9]

Character Class[A-Z1-9]*

*matches any number of characters from the set below:

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

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

0+the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated at least once

Character Class[A-Z1-9]

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

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

2nd Alternative([A-Z0-9]{10})$

Group 1([A-Z0-9]{10})

Character Class[A-Z0-9]{10}

{10}matches exactly 10 characters from the set below:

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

0-9one character from 0 (48₁₀) 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.

Search reference

Regular Expression

^(?:[A-Z1-9]*0+[A-Z1-9]|([A-Z0-9]{10})$)

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