regex101: Regex

1st Alternative(?:\bfunction\s+(\w+)$[^()]*$\s*\{|(?!^\G))(?:(?!\bfunction\s+\w+$[^()]*$\s+{|}\h*\r?\n).)*?\$body\s*->\s*(\w+)

Non-Capturing Group(?:\bfunction\s+(\w+)$[^()]*$\s*\{|(?!^\G))

1st Alternative\bfunction\s+(\w+)$[^()]*$\s*\{

\ban ASCII word boundary

functionthe literal text function (case sensitive)

\s+any whitespace character, repeated at least once

Group 1(\w+)

\w+any word character, repeated at least once

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

2nd Alternative(?!^\G)

Negative Lookahead(?!^\G)

^start of string

\Gstart of current search

Non-Capturing Group(?:(?!\bfunction\s+\w+$[^()]*$\s+{|}\h*\r?\n).)*?

*?repeats the group contents below any number of times:

Negative Lookahead(?!\bfunction\s+\w+$[^()]*$\s+{|}\h*\r?\n)

1st Alternative\bfunction\s+\w+$[^()]*$\s+{

\ban ASCII word boundary

functionthe literal text function (case sensitive)

\s+any whitespace character, repeated at least once

\w+any word character, repeated at least once

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\s+any whitespace character, repeated at least once

{the literal { (123₁₀ / 173₈ / 7B₁₆)

2nd Alternative}\h*\r?\n

}the literal } (125₁₀ / 175₈ / 7D₁₆)

\h*any horizontal whitespace character, repeated any number of times

\r?optionally matches a carriage return (ASCII 13)

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

.any character

\$the literal $ (36₁₀ / 44₈ / 24₁₆)

bodythe literal text body (case sensitive)

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

->the literal text ->

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

Group 2(\w+)

\w+any word character, repeated at least once

2nd Alternativefunction\s*(.+?)\(

functionthe literal text function (case sensitive)

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

Group 3(.+?)

.+?any character, repeated at least once

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Global pattern flags

s modifier: single line. Allows a dot to match line terminators

g modifier: global. Finds all matches instead of stopping after the first

Search reference

Regular Expression

(?:\bfunction\s+(\w+)\([^()]*\)\s*\{|(?!^\G))(?:(?!\bfunction\s+\w+\([^()]*\)\s+{|}\h*\r?\n).)*?\$body\s*->\s*(\w+)|function\s*(.+?)\(

Unit Tests

There are no unit tests, click to add some.