Regular Expressions 101

Non-Capturing Group(?:[^eps1@]|e(?!ps1@)|(?<!e)p(?!s1@)|(?<!ep)s(?!1@)|(?<!eps)1(?!@)|(?<!eps1)@)+

+repeats the group contents below at least once:

1st Alternative[^eps1@]

Negated Character Class[^eps1@]

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

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

2nd Alternativee(?!ps1@)

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

Negative Lookahead(?!ps1@)

ps1@the literal text ps1@ (case sensitive)

3rd Alternative(?<!e)p(?!s1@)

Negative Lookbehind(?<!e)

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

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

Negative Lookahead(?!s1@)

s1@the literal text s1@ (case sensitive)

4th Alternative(?<!ep)s(?!1@)

Negative Lookbehind(?<!ep)

epthe literal text ep (case sensitive)

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

Negative Lookahead(?!1@)

1@the literal text 1@

5th Alternative(?<!eps)1(?!@)

Negative Lookbehind(?<!eps)

epsthe literal text eps (case sensitive)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Negative Lookahead(?!@)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

6th Alternative(?<!eps1)@

Negative Lookbehind(?<!eps1)

eps1the literal text eps1 (case sensitive)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

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

(?:[^eps1@]|e(?!ps1@)|(?<!e)p(?!s1@)|(?<!ep)s(?!1@)|(?<!eps)1(?!@)|(?<!eps1)@)+

New

HelpMe_pleas3_eps1@OtherTexteps1@AnotherTime