regex101: PCRE2 (PHP) Match Workspace

Pro

1st Alternative(?:(?<=e)|(?<=episode)|(?<=episode[\.\s]))(\d{1,2})

Non-Capturing Group(?:(?<=e)|(?<=episode)|(?<=episode[\.\s]))

1st Alternative(?<=e)

Positive Lookbehind(?<=e)

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

2nd Alternative(?<=episode)

Positive Lookbehind(?<=episode)

episodethe literal text episode (case sensitive)

3rd Alternative(?<=episode[\.\s])

Positive Lookbehind(?<=episode[\.\s])

episodethe literal text episode (case sensitive)

Character Class[\.\s]

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\sany whitespace character

Group 1(\d{1,2})

\d{1,2}a digit, repeated between 1 and 2 times

2nd Alternative((?<=-)\d{1,2})

Group 2((?<=-)\d{1,2})

Positive Lookbehind(?<=-)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{1,2}a digit, repeated between 1 and 2 times

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

25 tokens

Regular Expression

(?:(?<=e)|(?<=episode)|(?<=episode[\.\s]))(\d{1,2})|((?<=-)\d{1,2})

New

some.random.tv.show.s01episode01.1080p
some.random.tv.show.s01episode 01.1080p
some.random.tv.show.s01episode1.1080p
some.random.tv.show.s01episode 1.1080p
some.random.tv.show.s01e01.1080p
some.random.tv.show.s01e1.1080p
some.random.tv.show.s01e0102.1080p
some.random.tv.show.s01e01-02.1080p
some.random.tv.show.s01e01e02.1080p
some.random.tv.show.s01e01-e02.1080p

Substitution

some.random.tv.show.s01episode01.1080p
some.random.tv.show.s01episode 01.1080p
some.random.tv.show.s01episode1.1080p
some.random.tv.show.s01episode 1.1080p
some.random.tv.show.s01e01.1080p
some.random.tv.show.s01e1.1080p
some.random.tv.show.s01e0102.1080p
some.random.tv.show.s01e01-02.1080p
some.random.tv.show.s01e01e02.1080p
some.random.tv.show.s01e01-e02.1080p