Regular Expressions 101

Pro

Positive Lookbehind(?<=\$t\('[^']*)

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negative Lookahead(?!(?:one|zero|others)')

Non-Capturing Group(?:one|zero|others)

1st Alternativeone

onethe literal text one (case sensitive)

2nd Alternativezero

zerothe literal text zero (case sensitive)

3rd Alternativeothers

othersthe literal text others (case sensitive)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Positive Lookahead(?=[^']*'\))

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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.

26 tokens

Regular Expression

(?<=\$t\('[^']*)\.(?!(?:one|zero|others)')(?=[^']*'\))

New

foo.toto.anything
$t('translationKey')
$t('translationKey.subkey.subSubkey')
$t('translationKey.subkey.one')
$t('translationKey.subkey.zero')
$t('translationKey.subkey.others')

Substitution

_

foo.toto.anything
$t('translationKey')
$t('translationKey.subkey.subSubkey')
$t('translationKey.subkey.one')
$t('translationKey.subkey.zero')
$t('translationKey.subkey.others')