regex101: PCRE2 (PHP) Match Workspace

Group 1((?:|^\b|\s+)--(?<option_1>.+?)(?:\s|=|$)(?!-)(?<value_1>[\"\'].+?[\"\']|.+?(?:\s|$))?|(?:|^\b)-(?<option_2>.)(?:\s|=|$)(?!-)(?<value_2>[\"\'].+?[\"\']|.+?(?:\s|$))?|(?<arg>[\"\'].+?[\"\']|.+?(?:\s|$)))

1st Alternative(?:|^\b|\s+)--(?<option_1>.+?)(?:\s|=|$)(?!-)(?<value_1>[\"\'].+?[\"\']|.+?(?:\s|$))?

Non-Capturing Group(?:|^\b|\s+)

1st Alternative — matches an empty string

2nd Alternative^\b

^start of line

\ban ASCII word boundary

3rd Alternative\s+

\s+any whitespace character, repeated at least once

--the literal text --

Group option_1(?<option_1>.+?)

.+?any character (except for line terminators), repeated at least once

Non-Capturing Group(?:\s|=|$)

1st Alternative\s

\sany whitespace character

2nd Alternative=

=the literal = (61₁₀ / 75₈ / 3D₁₆)

3rd Alternative$

$end of line

Negative Lookahead(?!-)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group value_1(?<value_1>[\"\'].+?[\"\']|.+?(?:\s|$))?

?repeats the group contents below at most once:

1st Alternative[\"\'].+?[\"\']

Character Class[\"\']

\"the literal " (34₁₀ / 42₈ / 22₁₆)

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

.+?any character (except for line terminators), repeated at least once

Character Class[\"\']

\"the literal " (34₁₀ / 42₈ / 22₁₆)

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative.+?(?:\s|$)

.+?any character (except for line terminators), repeated at least once

Non-Capturing Group(?:\s|$)

1st Alternative\s

\sany whitespace character

2nd Alternative$

$end of line

2nd Alternative(?:|^\b)-(?<option_2>.)(?:\s|=|$)(?!-)(?<value_2>[\"\'].+?[\"\']|.+?(?:\s|$))?

Non-Capturing Group(?:|^\b)

1st Alternative — matches an empty string

2nd Alternative^\b

^start of line

\ban ASCII word boundary

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group option_2(?<option_2>.)

.any character (except for line terminators)

Non-Capturing Group(?:\s|=|$)

1st Alternative\s

\sany whitespace character

2nd Alternative=

3rd Alternative$

Negative Lookahead(?!-)

Group value_2(?<value_2>[\"\'].+?[\"\']|.+?(?:\s|$))?

3rd Alternative(?<arg>[\"\'].+?[\"\']|.+?(?:\s|$))

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

((?:|^\b|\s+)--(?<option_1>.+?)(?:\s|=|$)(?!-)(?<value_1>[\"\'].+?[\"\']|.+?(?:\s|$))?|(?:|^\b)-(?<option_2>.)(?:\s|=|$)(?!-)(?<value_2>[\"\'].+?[\"\']|.+?(?:\s|$))?|(?<arg>[\"\'].+?[\"\']|.+?(?:\s|$)))

New

--in-argument hello --out-stdout false positional -x
--in-argument 'hello world"
"filename"
--in-argument="hello world'
--in-argument='hello'
--in-argument hello
"hello"
helloworld
--flag-off
-v
-x="hello"
-u positive
C:\serverfile
--in-arg1='abc' --in-arg2=hello world c:\\test