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 = '/(?P<PVS>pvs): (?P<src>[^:]+):(?P<src_port>\d{1,5})\|(?P<dest>[^:]+):(?P<dest_port>\d{1,5})\|(?P<protocol>\d{1,3})\|(?P<PVS_pluginid>\d{1,5})\|(?P<PVS_eventname>[^\|]+)\|(?P<PVS_data>[^\|]+)\|(?P<PVS_data2>[^\|]+)?\|(?P<PVS_risk>[^\|]+)([\r\n]+)/'; $str = 'May 13 09:15:44 10.x.x.x pvs: 10.x.x.x:53|10.y.y.y:53|17|7024|DNS Client Queries|PVS has observed this host perform a DNS lookup. The most recent DNS query performed was for: |hostname.some.ORG to the server at 10.y.y.y|NONE May 13 09:15:42 10.x.x.x pvs: 10.y.y.y32:61565|10.z.z.z:80|6|7041|HTTP request detection|The following GET/POST request was observed:|DIP: 10.z.z.z:80;URI: /department/Admin/ProjectManage/Lists/Develop%20New%20PM%20tracking/Research;Referer: None;Host: hostname2.some.org;Query: YES;PROTO: 1.0|NONE May 13 09:15:42 10.x.x.x pvs: 10.y.y.y32:61566|10.z.z.z:80|6|7041|HTTP request detection|The following GET/POST request was observed:|DIP: 10.z.z.z:80;URI: /committee_name/committees/budget_perf/DeptITPlansFY201516ThroughFY201920/CON;Referer: None;Host: hostname2.some.org;Query: NO;PROTO: 1.0|NONE '; preg_match_all($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