Regular Expressions 101

Pro

^start of line

Negated Character Class[^\d]*

*matches any number of characters outside the set below:

\da digit

Group 1(\d+)

\d+a digit, repeated at least once

Negated Character Class[^\dx]*

*matches any number of characters outside the set below:

\da digit

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Character Class[xX]

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Xthe literal X (88₁₀ / 130₈ / 58₁₆) (case sensitive)

Negated Character Class[^\dx]*

*matches any number of characters outside the set below:

\da digit

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Group 2(\d+)

\d+a digit, repeated at least once

Negated Character Class[^\d]*

*matches any number of characters outside the set below:

\da digit

$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.

25 tokens

^[^\d]*(\d+)[^\dx]*[xX][^\dx]*(\d+)[^\d]*$

S (26 in x 30 in)
20 x 40
Standard Size (10 x 40)
20 x 40 x 80
M (26 in x 30 in x 50 in)

S (26 in x 30 in)
20 x 40
Standard Size (10 x 40)
20 x 40 x 80
M (26 in x 30 in x 50 in)