Regular Expressions 101

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@
(?:(?<=/Joseph/)|\G(?!\A)/)[^=]+=([^=/]+)
@
g
Non-capturing group
(?:(?<=/Joseph/)|\G(?!\A)/)
1st Alternative
(?<=/Joseph/)
Positive Lookbehind
(?<=/Joseph/)
Assert that the Regex below matches
/Joseph/
matches the characters /Joseph/ literally (case sensitive)
2nd Alternative
\G(?!\A)/
\G asserts position at the end of the previous match or the start of the string for the first match
Negative Lookahead
(?!\A)
Assert that the Regex below does not match
\A asserts position at start of the string
/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
Match a single character not present in the list below
[^=]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
= matches the character = with index 6110 (3D16 or 758) literally (case sensitive)
= matches the character = with index 6110 (3D16 or 758) literally (case sensitive)
1st Capturing Group
([^=/]+)
Match a single character not present in the list below
[^=/]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
=/
matches a single character in the list =/ (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

@
@
g

Test String

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