regex101: PCRE2 (PHP) Substitution Workspace

Pro

1st Alternative(?> ($) | ({) | \[ ) \h*\d [\h\d]*+ (?(1) $ | (?(2) } | ] ) ) \h* (*SKIP)(*F)

Atomic Group(?> (\() | ({) | \[ )

1st Alternative (\()

Group 1(\()

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

2nd Alternative ({)

Group 2({)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

3rd Alternative \[

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

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

\da digit

Character Class[\h\d]*+

*+matches any number of characters from the set below:

\hany horizontal whitespace character

\da digit

Condition(?(1) \) | (?(2) } | ] ) )

Uses the first branch if group 1 matched

If the condition is true, match this branch: \)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Otherwise, match this branch: (?(2) } | ] )

Condition(?(2) } | ] )

Uses the first branch if group 2 matched

If the condition is true, match this branch: }

} the literal text }

Otherwise, match this branch: ]

] the literal text ]

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

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*F)forces the current match attempt to fail at this position

2nd Alternative [][(){}]

Character Class[][(){}]

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

3rd Alternative [^][(){}\r\n#]+

Negated Character Class[^][(){}\r\n#]+

+matches at least one character outside the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

[the literal [ (91₁₀ / 133₈ / 5B₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

{the literal { (123₁₀ / 173₈ / 7B₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

\ra carriage return (ASCII 13)

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

#the literal # (35₁₀ / 43₈ / 23₁₆)

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

25 tokens

Regular Expression

(?>
   (\()
   |
   ({)
   |
   \[
)
\h*\d
[\h\d]*+
(?(1)
   \)
   |
   (?(2)
      }
      |
      ]
   )
)
\h*
(*SKIP)(*F)
|
[][(){}]
|
[^][(){}\r\n#]+

New

# (1296) {20} [529] [1496] [411]
# (MONDAY ) (1296)
# (646) {20} (BEACH 7) [20 Mtrs] { 03 Foot }
# {19} [455] [721] (1296) (SUNDAY ) [2741] (MONDAY (WEDNESDAY {20}
# {19} (1296)
# (1296) {20} [529] [1496] [411] [zz (12) {{45} [monday]

Substitution

# (1296) {20} [529] [1496] [411]
# (MONDAY ) (1296)
# (646) {20} (BEACH 7) [20 Mtrs] { 03 Foot }
# {19} [455] [721] (1296) (SUNDAY ) [2741] (MONDAY (WEDNESDAY {20}
# {19} (1296)
# (1296) {20} [529] [1496] [411] [zz (12) {{45} [monday]