Regular Expressions 101

Group 1([\w-]+)

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\h*any horizontal whitespace character, repeated any number of times

Group 2(=)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\h*any horizontal whitespace character, repeated any number of times

Group 3( (["']).*(?!["']) | [\w-]+ )

1st Alternative (["']).*(?!["'])

Group 4(["'])

Character Class["']

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

.*any character (except for line terminators), repeated any number of times

Negative Lookahead(?!["'])

Character Class["']

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative [\w-]+

Character Class[\w-]+

+matches at least one character from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Global pattern flags

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

([\w-]+)
\h*
(=)
\h*
(
(["']).*(?!["'])
|
[\w-]+
)

New

th-is="atest"
key=value

what = about

one, two, three

foo = bar and bar=foo OR foobar = "foo,= key=foo,whatever = 'oops' bar"


foo="
test
"
foo ? time

IF foo = bar AND bar=foo OR foobar = "foo bar"

what = 'if this works'

this, is, a, test

what="if this works"

now=time

Regular Expression

Substitution