use strict;
my $str = '<html>
<head>
<script>
var x = 1;
var y = \'findthis\'; // Should be matched
</script>
</head>
<body>
<script>
var a = 2;
</script>
<h1>Welcome!</h1>
<p>This findthis here should not be matched.</p>
<script>
var b = \'findthis too\'; // Should be matched, too.
</script>
<div>
<p>This findthis should not be matched neither.</p>
</div>
</body>
</html>';
my $regex = qr/\<script\>[^<]*?(findthis).*?\<\/script\>/sp;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html