Regular Expressions 101

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/
(?:(\d*)['"]|(\d*\.\d*)['"]|(\d*(?>') \d*\.?\d*)["]|(\d*-\d\/\d)")
/
gm
Non-capturing group
(?:(\d*)['"]|(\d*\.\d*)['"]|(\d*(?>') \d*\.?\d*)["]|(\d*-\d\/\d)")
1st Alternative
(\d*)['"]
1st Capturing Group
(\d*)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
Match a single character present in the list below
['"]
'"
matches a single character in the list '" (case sensitive)
2nd Alternative
(\d*\.\d*)['"]
2nd Capturing Group
(\d*\.\d*)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\. matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
Match a single character present in the list below
['"]
'"
matches a single character in the list '" (case sensitive)
3rd Alternative
(\d*(?>') \d*\.?\d*)["]
3rd Capturing Group
(\d*(?>') \d*\.?\d*)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
Atomic Group
(?>')
Non-capturing group that discards backtracking positions once matched.
' matches the character ' with index 3910 (2716 or 478) literally (case sensitive)
matches the character with index 3210 (2016 or 408) literally (case sensitive)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
\.
matches the character . with index 4610 (2E16 or 568) literally (case sensitive)
? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
Match a single character present in the list below
["]
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
4th Alternative
(\d*-\d\/\d)"
4th Capturing Group
(\d*-\d\/\d)
\d
matches a digit (equivalent to [0-9])
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
- matches the character - with index 4510 (2D16 or 558) literally (case sensitive)
\d matches a digit (equivalent to [0-9])
\/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
\d matches a digit (equivalent to [0-9])
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gm

Test String