regex101: PCRE2 (PHP) Match Workspace

Pro

1st Alternative(?i:'s|'t|'re|'ve|'m|'ll|'d)

Group with flags gmi(?i:'s|'t|'re|'ve|'m|'ll|'d)

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

1st Alternative's

'sthe literal text 's (case insensitive)

2nd Alternative't

'tthe literal text 't (case insensitive)

3rd Alternative're

'rethe literal text 're (case insensitive)

4th Alternative've

'vethe literal text 've (case insensitive)

5th Alternative'm

'mthe literal text 'm (case insensitive)

6th Alternative'll

'llthe literal text 'll (case insensitive)

7th Alternative'd

'dthe literal text 'd (case insensitive)

2nd Alternative[^\r\n\p{L}\p{N}]?\p{L}+

Negated Character Class[^\r\n\p{L}\p{N}]?

?matches at most one character outside the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

\p{L}any Unicode letter

\p{N}a decimal digit, letterlike number, or other numeric character

\p{L}+any Unicode letter, repeated at least once

3rd Alternative\p{N}{1,3}

\p{N}{1,3}a decimal digit, letterlike number, or other numeric character, repeated between 1 and 3 times

4th Alternative ?[^\s\p{L}\p{N}]+[\r\n]*

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Negated Character Class[^\s\p{L}\p{N}]+

+matches at least one character outside the set below:

\sany whitespace character

\p{L}any Unicode letter

\p{N}a decimal digit, letterlike number, or other numeric character

Character Class[\r\n]*

*matches any number of characters from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

5th Alternative\s*[\r\n]+

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

Character Class[\r\n]+

+matches at least one character from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

6th Alternative\s+(?!\S)

\s+any whitespace character, repeated at least once

Negative Lookahead(?!\S)

\Sany non-whitespace character

7th Alternative\s+

\s+any whitespace character, repeated at least once

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

(?i:'s|'t|'re|'ve|'m|'ll|'d)|[^\r\n\p{L}\p{N}]?\p{L}+|\p{N}{1,3}| ?[^\s\p{L}\p{N}]+[\r\n]*|\s*[\r\n]+|\s+(?!\S)|\s+

Unit Tests

There are no unit tests, click to add some.