Regular Expressions 101

^start of line

Non-Capturing Group(?:(?:$none$ > )+|(?:\w+ \/ \w+ > ))?

?repeats the group contents below at most once:

1st Alternative(?:$none$ > )+

Non-Capturing Group(?:$none$ > )+

+repeats the group contents below at least once:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

nonethe literal text none (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

> the literal text >

2nd Alternative(?:\w+ \/ \w+ > )

Non-Capturing Group(?:\w+ \/ \w+ > )

\w+any word character, repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\w+any word character, repeated at least once

> the literal text >

Group 1(\w+ \/ \w+)

\w+any word character, repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

\w+any word character, repeated at least once

Negative Lookahead(?!\S)

\Sany non-whitespace character

.*any character (except for line terminators), 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.

Search reference

Regular Expression

^(?:(?:\(none\) > )+|(?:\w+ \/ \w+ > ))?(\w+ \/ \w+)(?!\S).*

Test String
New

google / cpc > google / organic
google / cpc > google / organic > direct / (none)
google / organic
(none) > (none) > (none) > google / organic > direct / (none) > direct / (none)
direct / (none)

Regular Expression

Test StringNew

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Test String
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