Regular Expressions 101

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Regular Expression
PCRE (PHP <7.3)

/
(?P<nested> \b if \b (?P<if>(?>.?(?>(?P>nested))?)*?) (?: \b elsif \b (?P<elsif>(?>.?(?>(?P>nested))?)*?) )? (?: \b else \b (?P<else>(?>.?(?>(?P>nested))?)*?) )? \b endif \b )?
/
ixs
Open regex in editor

Description

catchs multiple elsifs in the only elsif group take care of keywords in comments, mask out them first

Submitted by anonymous - 5 years ago