Regular Expressions 101

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1(\d+)

\d+a digit, repeated at least once

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\[(\d+)]

this is a test [1] also this [2] is a test
and again [3] this is a test