php - Regex to match words and acronyms in camel case string -

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i need regular expression capture word parts of string camel case , might have acronym in it. in other words, want split camel case string words , acronyms.

for example:

someabcwords

... has 3 capture groups

some abc words

so far i've found regex:

((?:^|[a-z])[a-z]+)

but won't handle acronyms , match 'some' , 'words'.

one way solve capture abbreviations added negative lookahead.

[a-z][a-z]+|[a-z]+(?![a-z])

regular expression visualization

sample


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