regex101: PCRE2 (PHP) Match Workspace

Pro

1st Alternative # begin capture group 1 \{\s+"name":[ ]" # match '{' then 1+ whitespace chars, then '"name": " (\w+) # match 1+ word chars, save to capture group 1 - # match '-' (\w+) # match 1+ word chars, save to capture group 2 - # match '-' (\w+) # match 1+ word chars, save to capture group 3 - # match '-' (\w+) # match 1+ word chars, save to capture group 4 ( # begin capture group 5 ",\s+"units":[ ] # match '",', then 1+ whitespaces then '"units": ' "\w+" # match 1+ word chars ,\s+"value":[ ] # match ',', then 1+ whitespaces then '"value": ' \d+ # match 1+ digits \s+\} # match 1+ whitespaces then '"units": ' ) # end capture group 5 # end capture group 1 (?! # begin negative lookahead .* # match 0+ chars \{\s+"name":[ ]" # match '{' then 1+ whitespace chars then '"name": ' then '"' \1_ # match contents of capture group 1 then '_' \2_ # match contents of capture group 2 then '_' \3_ # match contents of capture group 3 then '_' \4 # match contents of capture group 4 \5 # match contents of capture group 5 ) # end of negative lookahead

Comment: begin capture group 1

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\s+any whitespace character, repeated at least once

"name":the literal text "name": (case sensitive)

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

" the literal text "

Comment: match '{' then 1+ whitespace chars, then '"name": "

Group 1(\w+)

\w+any word character, repeated at least once

Comment: match 1+ word chars, save to capture group 1

- the literal text -

Comment: match '-'

Group 2(\w+)

\w+any word character, repeated at least once

Comment: match 1+ word chars, save to capture group 2

- the literal text -

Comment: match '-'

Group 3(\w+)

\w+any word character, repeated at least once

Comment: match 1+ word chars, save to capture group 3

- the literal text -

Comment: match '-'

Group 4(\w+)

\w+any word character, repeated at least once

Comment: match 1+ word chars, save to capture group 4

Group 5( # begin capture group 5 ",\s+"units":[ ] # match '",', then 1+ whitespaces then '"units": ' "\w+" # match 1+ word chars ,\s+"value":[ ] # match ',', then 1+ whitespaces then '"value": ' \d+ # match 1+ digits \s+\} # match 1+ whitespaces then '"units": ' )

Comment: begin capture group 5

",the literal text ",

\s+any whitespace character, repeated at least once

"units":the literal text "units": (case sensitive)

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

Comment: match '",', then 1+ whitespaces then '"units": '

"the literal text "

\w+any word character, repeated at least once

" the literal text "

Comment: match 1+ word chars

,the literal text ,

\s+any whitespace character, repeated at least once

"value":the literal text "value": (case sensitive)

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

Comment: match ',', then 1+ whitespaces then '"value": '

\d+a digit, repeated at least once

Comment: match 1+ digits

\s+any whitespace character, repeated at least once

\}the literal } (125₁₀ / 175₈ / 7D₁₆)

Comment: match 1+ whitespaces then '"units": '

Comment: end capture group 5

Comment: end capture group 1

Negative Lookahead(?! # begin negative lookahead .* # match 0+ chars \{\s+"name":[ ]" # match '{' then 1+ whitespace chars then '"name": ' then '"' \1_ # match contents of capture group 1 then '_' \2_ # match contents of capture group 2 then '_' \3_ # match contents of capture group 3 then '_' \4 # match contents of capture group 4 \5 # match contents of capture group 5 )

Comment: begin negative lookahead

.*any character, repeated any number of times

Comment: match 0+ chars

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\s+any whitespace character, repeated at least once

"name":the literal text "name": (case sensitive)

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

" the literal text "

Comment: match '{' then 1+ whitespace chars then '"name": ' then '"'

\1the text saved by group 1

_ the literal text _

Comment: match contents of capture group 1 then '_'

\2the text saved by group 2

_ the literal text _

Comment: match contents of capture group 2 then '_'

\3the text saved by group 3

_ the literal text _

Comment: match contents of capture group 3 then '_'

\4the text saved by group 4

Comment: match contents of capture group 4

\5the text saved by group 5

Comment: match contents of capture group 5

Comment: end of negative lookahead

2nd Alternative # or \{\s+"name":[ ]" # match '{' then 1+ whitespace chars, then '"name": " \w+ # match 1+ word chars _ # match '_' \w+ # match 1+ word chars _ # match '_' \w+ # match 1+ word chars _ # match '_' \w+ # match 1+ word chars (?5) # execute code constructing capture group 6

Comment: or

\{the literal { (123₁₀ / 173₈ / 7B₁₆)

\s+any whitespace character, repeated at least once

"name":the literal text "name": (case sensitive)

Character Class[ ]

the literal (32₁₀ / 40₈ / 20₁₆)

" the literal text "

Comment: match '{' then 1+ whitespace chars, then '"name": "

\w+any word character, repeated at least once

Comment: match 1+ word chars

_ the literal text _

Comment: match '_'

\w+any word character, repeated at least once

Comment: match 1+ word chars

_ the literal text _

Comment: match '_'

\w+any word character, repeated at least once

Comment: match 1+ word chars

_ the literal text _

Comment: match '_'

\w+any word character, repeated at least once

Comment: match 1+ word chars

(?5)calls group 5 as a subroutine

Comment: execute code constructing capture group 6

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

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

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

25 tokens

Regular Expression

                    # begin capture group 1
\{\s+"name":[ ]"     # match '{' then 1+ whitespace chars, then '"name": "
(\w+)                # match 1+ word chars, save to capture group 1
-                    # match '-'
(\w+)                # match 1+ word chars, save to capture group 2
-                    # match '-'
(\w+)                # match 1+ word chars, save to capture group 3
-                    # match '-'
(\w+)                # match 1+ word chars, save to capture group 4
(                    # begin capture group 5
  ",\s+"units":[ ]   # match '",', then 1+ whitespaces then '"units": '
  "\w+"              # match 1+ word chars
  ,\s+"value":[ ]    # match ',', then 1+ whitespaces then '"value": '
  \d+                # match 1+ digits
  \s+\}              # match 1+ whitespaces then '"units": '
)                    # end capture group 5
                    # end capture group 1
(?!                  # begin negative lookahead
  .*                 # match 0+ chars
  \{\s+"name":[ ]"   # match '{' then 1+ whitespace chars then '"name": ' then '"'
  \1_                # match contents of capture group 1 then '_'
  \2_                # match contents of capture group 2 then '_'
  \3_                # match contents of capture group 3 then '_'
  \4                 # match contents of capture group 4
  \5                 # match contents of capture group 5
)                    # end of negative lookahead 
|                    # or
\{\s+"name":[ ]"     # match '{' then 1+ whitespace chars, then '"name": "
\w+                  # match 1+ word chars
_                    # match '_'
\w+                  # match 1+ word chars
_                    # match '_'
\w+                  # match 1+ word chars
_                    # match '_'
\w+                  # match 1+ word chars
(?5)                 # execute code constructing capture group 6

New

{
  "body": {
    "metricsArray": [
      {
        "name": "free-aa-bb2-123x123Profiles",
        "units": "profiles",
        "value": 14
      },
      {
        "name": "free_aa_bb2_123x123Profiles",
        "units": "profiles",
        "value": 14
      }
    ],
    "name": "regionxxx",
    "timeStamp": "2022-01-20T04:58:29.875Z"
  }
}

Extraction

{
  "body": {
    "metricsArray": [
      {
        "name": "free-aa-bb2-123x123Profiles",
        "units": "profiles",
        "value": 14
      },
      {
        "name": "free_aa_bb2_123x123Profiles",
        "units": "profiles",
        "value": 14
      }
    ],
    "name": "regionxxx",
    "timeStamp": "2022-01-20T04:58:29.875Z"
  }
}