Regular Expressions 101

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Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
g

Test String

Code Generator

Language

Generated Code

use strict; my $str = 'Mozilla/5.0 (Linux; Android 5.1.1; HUAWEI P7-L07 Build/HuaweiP7-L07) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100431 Mozilla/5.0 (Linux; Android 8.0.0; LG-H930 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 Zalo android/12100476 Mozilla/5.0 (Linux; Android 9.0; F11 Pro Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 9; SM-A505F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; Nova i6 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; Mobiistar_LAI_Yuna_C Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 8.1; U2 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 8.1; U2 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 8.1; U2 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 8.1; U2 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; BV6000S Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; U2 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; Nova i6 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_4 like Mac OS X) AppleWebKit/603.3.8 (KHTML, like Gecko) Mobile/14G61 Zalo iOS / 317 Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_4 like Mac OS X) AppleWebKit/603.3.8 (KHTML, like Gecko) Mobile/14G61 Zalo iOS / 317 Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_4 like Mac OS X) AppleWebKit/603.3.8 (KHTML, like Gecko) Mobile/14G61 Zalo iOS / 317 Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_4 like Mac OS X) AppleWebKit/603.3.8 (KHTML, like Gecko) Mobile/14G61 Zalo iOS / 317 Mozilla/5.0 (Linux; Android 5.1.1; SM-G361H Build/LMY48B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.92 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 9; CPH1989 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; Nova i6 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (iPhone; CPU iPhone OS 9_3_6 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G37 Zalo iOS / 320 Mozilla/5.0 (iPhone; CPU iPhone OS 9_3_6 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G37 Zalo iOS / 320 Mozilla/5.0 (iPhone; CPU iPhone OS 9_3_6 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G37 Zalo iOS / 320 Mozilla/5.0 (Linux; Android 5.1; F7 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100429 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1.1; vivo Y31A Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; R7sf Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; gxq6580_weg_l Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100468 Mozilla/5.0 (Linux; Android 5.1; HUAWEI TIT-U02 Build/HUAWEITIT-U02) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.1; MIONE 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.1; MIONE 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.1; MIONE 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.1; MIONE 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; A33w Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; A37f Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; 1201 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; 1201 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; 1201 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; 1201 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0; A9s Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0; A9s Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0; A9s Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0; A9s Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1.1; vivo X7Plus Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; Lenovo A2010-a Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.136 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (iPhone; CPU iPhone OS 13_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Zalo iOS / 320 Mozilla/5.0 (Linux; Android 9.0; SM-A70 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100441 Mozilla/5.0 (Linux; Android 6.0; ZIP 56 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0; ZIP 56 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 8.1.0; A20 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1.1; vivo X7 Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 8.0; SM-N9600 Build/MMB29K) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0.1; MI 5s Build/MXB48T; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 5.1; F5 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 8.1.0; vivo 1820 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 8.1.0; RMX1811 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/75.0.3770.101 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 7.1.1; SM-J250F Build/NMF26X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 8.1.0; SM-J260G Build/M1AJB; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Zalo android/12100480 Mozilla/5.0 (Linux; Android 6.0.1; CPH1613 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0.1; CPH1613 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0.1; CPH1613 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 6.0.1; CPH1613 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 Zalo/1.0 Mozilla/5.0 (Linux; Android 5.1; N526 Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 Zalo android/12100480'; my $regex = qr/Android (\d+)[._](\d+)[._]?(\d+)?/p; 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