use strict;
my $str = 'Pay this amount $45.50
Pay this amount due Mar04 $56.67 → Does not work with current expression
Amount due $56.78 → works with current expression
Amount due on dec4 $76.45 → does not work with current expression
Total balance $76.45 → works with current expression
Total balance on apr3 $64.34';
my $regex = qr/(?<=Amount Due|Pay This Amount|Total Balance|Total Current Month’s Charges|Amount Now Due|Amount Due|Amount due on|Total Balance on)\s+(\w+)?\s?\$([\d.,]+)/mip;
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