Regular Expressions 101

\s*any whitespace character, repeated any number of times

Character Class[()]

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Positive Lookahead(?=(?:[^@]*@[^@]*@)*[^@]*$)

Non-Capturing Group(?:[^@]*@[^@]*@)*

*repeats the group contents below any number of times:

Negated Character Class[^@]*

*matches any number of characters outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Negated Character Class[^@]*

*matches any number of characters outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Negated Character Class[^@]*

*matches any number of characters outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

$end of line

\s*any whitespace character, repeated any number of 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

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

\s*[()](?=(?:[^@]*@[^@]*@)*[^@]*$)\s*

New

( [15] == @value 1@ || [15] == @value 2@ )  &&  ( [5] == @value 3 (ignore these)@ || [5] == @value 4@ )  ||  ( [2] == @value 5@ )

( [15] == @value 1@ || [15] == @value 2@ )  &&  ( [5] == @value 3 (ignore these)@ || [5] == @value 4@ )  ||  ( [2] == @value 5@ )