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

/
/
gm

Test String

Code Generator

Language

Generated Code

$re = '/(EventCode=(4624|4634|4625)\X*Account Name:(\s+.*\.adm.*))|(EventCode=(4659|4663|5145)\X*Object Name:(\s+.*Test_share.*))/m'; $str = '05/03/2024 02:46:06 PM LogName=Security EventCode=4624 EventType=0 ComputerName=myhost SourceName=Microsoft Windows security auditing. Type=Information RecordNumber=0 Keywords=Audit Success TaskCategory=Logon OpCode=Info Message=An account was successfully logged on. Subject: Security ID: NULL SID Account Name: - Account Domain: - Logon ID: 0x0 Logon Information: Logon Type: 3 Restricted Admin Mode: - Virtual Account: No Elevated Token: Yes Impersonation Level: Delegation New Logon: Security ID: DOMAIN\\user.adm Account Name: user.adm Account Domain: DOMAIN.LOCAL Logon ID: 0 Linked Logon ID: 0x0 Network Account Name: - Network Account Domain: - Logon GUID: {} Process Information: Process ID: 0x0 Process Name: - Network Information: Workstation Name: - Source Network Address: Source Port: 63095 Detailed Authentication Information: Logon Process: Kerberos Authentication Package: Kerberos Transited Services: - Package Name (NTLM only): - Key Length: 0 04/30/2024 04:49:05 PM LogName=Security EventCode=4659 EventType=0 ComputerName=MyHost SourceName=Microsoft Windows security auditing. Type=Information RecordNumber=0 Keywords=Audit Success TaskCategory=File System OpCode=Info Message=A handle to an object was requested with intent to delete. Subject: Security ID: myuser Account Name: myuser Account Domain: Domain Logon ID: 0x580B3D59 Object: Object Server: Security Object Type: File Object Name: D:\\Test_share\\prova.txt Handle ID: 0x0 Process Information: Process ID: 0x4 Access Request Information: Transaction ID: {00000000-0000-0000-0000-000000000000} Accesses: DELETE ReadAttributes Access Mask: 0x10080 Privileges Used for Access Check: -'; preg_match_all($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