use strict;
my $str = 'RubyBrowser/46.3.26 (iPhone; iOS 15.0.2; Scale/2.00)
bazaart/7.4.3 (iPhone; iOS 15.0.2; Scale/2.00)
Mozilla/5.0 (iPhone; CPU iPhone OS 13_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 LightSpeed [FBAN/MessengerLiteForiOS;FBAV/294.0.0.60.128;FBBV/262406393;FBDV/iPhone11,8;FBMD/iPhone;FBSN/iOS;FBSV/13.5.1;FBSS/2;FBCR/;FBID/phone;FBLC/en;FBOP/0]
Mozilla/5.0 (iPhone; CPU iPhone OS 14_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 LightSpeed [FBAN/MessengerLiteForiOS;FBAV/332.0.0.45.117;FBBV/321367341;FBDV/iPhone11,2;FBMD/iPhone;FBSN/iOS;FBSV/14.7.1;FBSS/3;FBCR/;FBID/phone;FBLC/en;FBOP/0]
120572 Mozilla/5.0 (iPhone1 03; CPU iPhone OS 11_0_1 like Mac OS X) AppleWebKit/604.3.5 (KHTML, like Gecko) Version/11.0 MQQBrowser/8.2.1 Mobile/15B87 Safari/604.1 MttCustomUA/2 QBWebViewType/1 WKType/1
120584 OneDriveiOSApp/12.19.5 (iOS/14.4; en_CA; Apple/iPhone)
120613 Mozilla/5.0 (iPhone X; CPU iPhone OS 13_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Mobile/15E148 Safari/604.1
120690 Instagram 175.0.0.23.117 (iPhone8,1; iOS 14_1; de_DE; de-DE; scale=2.00; 750x1334; 272995447) AppleWebKit/420+
120696 Instagram 175.0.0.23.117 (iPhone13,1; iOS 14_2_1; it_IT; it-IT; scale=2.88; 1080x2338; 272995447) AppleWebKit/420+
120697 Instagram 174.0.0.21.119 (iPhone12,3; iOS 13_6; it_IT; it-IT; scale=3.00; 1125x2436; 271836321) AppleWebKit/420+
Mozilla/5.0 (iPad; CPU OS 8_4_1 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12H321 Safari/600.1.4
Mozilla/5.0 (iPad; CPU OS 10_3_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) GSA/7.0.55539 Mobile/14G60 Safari/600.1.4
Mozilla/5.0 (iPad; CPU OS 10_3_2 like Mac OS X) AppleWebKit/603.2.4 (KHTML, like Gecko) Version/10.0 Mobile/14F8089 Safari/602.1
Mozilla/5.0 (iPad; CPU OS 10_3_3 like Mac OS X) AppleWebKit/603.3.8 (KHTML, like Gecko) Version/10.0 Mobile/14G60 Safari/602.1
Mozilla/5.0 (iPad; CPU OS 9_3_2 like Mac OS X) AppleWebKit/601.1 (KHTML, like Gecko) CriOS/63.0.3239.73 Mobile/13F69 Safari/601.1.46
Mozilla/5.0 (iPad; CPU OS 9_3_2 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13F69 Safari/601.1
Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)
Mozilla/5.0 (iPhone; CPU iPhone OS 7_0_2 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) CriOS/30.0.1599.12 Mobile/11A501 Safari/8536.25 MicroMessenger/6.1.0
Mozilla/5.0 (iPhone; CPU iPhone OS 11_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.0 Mobile/15E148 Safari/604.1
Mozilla/5.0 (iPhone; CPU iPhone OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Mobile/14D27 MicroMessenger/6.5.5 NetType/WIFI Language/zh_CN
';
my $regex = qr/(((iPhone([\d\W]+)|iPhone|iPad)(;|\s\d+;|\s\w+;|\s\d+\w+;)?(\s+)?(U;)?)(\s+)?(CPU|iOS)([^\);]+)?)/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