use strict;
my $str = 'http://lkker-10041312.file.myqcloud.com/Images/201712/SrOq15133074890982.png
http://pic.lkker.com/afdsafds
//images.lkker.com/afdsafds
{"A":"//images.lkker.com/afdsafds", "B":"//images.lkker.com/afdsafds"}
//images.lkker.com/afdsafds|https://images.lkker.com/afdsafds|http://images.lkker.com/afdsafds';
my $regex = qr`(((http|https):)?//?)(lkker-10041312\.file\.myqcloud\.com|lkker-10041312\.cossh\.myqcloud\.com|pic\.lkker\.com|files\.lkker\.com|lkker-10041312\.picsh\.myqcloud\.com|lkker-10041312\.image\.myqcloud\.com|images\.lkker\.com)`mp;
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