Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
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

$re = '/(?<method>(GET|POST))\s*(?<uri>[\S]+)\s*(?<protocol>(HTTP|\w+)\/[\S]+)\s*(.*?)(?<status>[\d]+)\s\d+\s*\d+\.\d+/'; $str = '[2/Jun/2009:07:36:19 -0600] secure.com 196.49.49.36 196.49.49.36 10.19.48.71, 57.28.75.174 57.28.75.196 GET /api-dual/us HTTP/1.1 200 2013 0.764 https://secure.chas.com/ no-cache, max-age=0 Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 Chrome/55.0.2883.8537 Safari/7.310.4031EB0C1D8BE068A9BD600440A5D792 jcXr-RtOQKZS804wxfPLCFZ3 - Web [2/Jun/2009:07:36:19 -0600] api.co.us 196.49.49.36 196.49.49.36 10.19.48.71 - POST /api-dual/menu/Identity HTTP/1.1 200 47 0.659 - no-cache Apache CXF 3.1.0 - - - - [2/Jun/2009:07:36:19 -0600] 196.49.49.47 196.49.49.47 - GET /api-login/ HTTP/1.1 200 163 0.002 - - - - - - - [[2/Jun/2009:07:36:19 -0600] secure.com 196.49.49.47 196.49.49.47 10.19.48.71, 57.28.75.174 57.28.75.196 GET /api-dual/accounts/?status=Posted&toDate=2009-06-02&fromDate=2009-06-24&channelType=Mobile&action=next HTTP/1.1 ?status=Posted&toDate=2009-06-24&fromDate=2016-09-24&channelType=Mobile&action=next 200 13898 0.194 https://secure.com max-age=0 Mozilla/5.0 (iPhone; CPU iPhone OS 9_3_5 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G36 F72AEE043E08F5020E2F5A84F58774EE zKplRZORI+gYDxth6rxIj8rZ -chs26'; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); // Print the entire match result var_dump($matches);

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 PHP, please visit: http://php.net/manual/en/ref.pcre.php