Regular Expressions 101

1st Alternative((?:[/?=_–.-])([a-z]+)(?:[/?=_–.-]))

Group 1((?:[/?=_–.-])([a-z]+)(?:[/?=_–.-]))

Non-Capturing Group(?:[/?=_–.-])

Character Class[/?=_–.-]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

–the literal – (8211₁₀ / 20023₈ / 2013₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2([a-z]+)

Character Class[a-z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Non-Capturing Group(?:[/?=_–.-])

Character Class[/?=_–.-]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

–the literal – (8211₁₀ / 20023₈ / 2013₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative([a-z]+)

Group 3([a-z]+)

Character Class[a-z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

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-z]+)(?:[/?=_–.-]))|([a-z]+)

New

-facebook=chat.messenger?
-facebook=chat.messenger?sdsdsdsds-
-facebook=chat.messenger?sdsdsdsds-facebook=chat.messenger?sdsdsdsds-