Syntax error Regular Expression Special Variables in Perl

Regular Expression Special Variables in Perl

There are various Regular Expression Special Variables in Perl. We have listed them in different below in tabular form −

$digit Contains the text matched by the corresponding set of parentheses in the last pattern matched. For example, $1 matches whatever was contained in the first set of parentheses in the previous regular expression.
$& The string matched by the last successful pattern match.
$MATCH
$` The string preceding whatever was matched by the last successful pattern match.
$PREMATCH
$' The string following whatever was matched by the last successful pattern match.
$POSTMATCH
$+ The last bracket matched by the last search pattern. This is useful if you don't know which of a set of alternative patterns was matched. For example : /Version: (.*)|Revision: (.*)/ && ($rev = $+);

Updated on: 2019-11-29T11:52:35+05:30

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