Regular Expressions 101

Save & Share

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
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 = '/(?P<date>\w{3}\s+\d{1,2}\s\d\d:\d\d:\d\d)\s+(?P<device>\S+)\s+(?:[^:]+:\s)@@(?P<sid_number>\d+),(?P<sid>[^,]+),(?:"zoneUUID"="(?P<zone_uuid>[^"]+)",|"apMac"="(?P<ap_mac>[^"]+)",|"clientMac"="(?P<client_mac>[^"]+)",|"bssid"="(?P<bssid>[^"]+)",|"userId"="(?P<user_id>[^"]*)",|"wlanId"="(?P<wlanId>\d+)",|"iface"="(?P<iface>\S+)",|"tenantUUID"="(?P<tenantUUID>\S+)"|"apName"="(?P<ap_name>[^"]+)",|"rogueMac"="(?P<rogue_mac>[^"]+)",|"ssid"="(?P<ssid>[^"]*)",|"wlanId"="(?P<wlan_id>[^"]+)",|"radio"="(?P<radio>[^"]+)",|"channel"="(?P<channel>[^"]+)",|"timestamp"="(?P<timestamp>\d{10})[^"]*",|"apLocation"="(?P<ap_location>[^"]+)",?|"timeZone"="(?P<time_zone>[^"]+)",|"zoneName"="(?P<zone_name>[^"]+)",?|"reason"="(?P<reason>[^"]+)",|"fwVersion"="(?P<fwVersion>[^"]+)",|"model"="(?P<model>[^"]+)",|"nodeName"="(?P<node_name>[^"]+)",|"licenseServerName"="(?P<licenseServerName>[^"]+)",?)+"/m'; $str = 'Nov 26 19:09:07 vsz01 Core: @@205,clientInactivityTimeout,"apMac"="90:3a:72:2f:10:70","clientMac"="00:34:da:1d:7f:83","ssid"="DIGITROL COLABORADORES","bssid"="90:3a:72:af:10:7c","userId"="fgfhf","wlanId"="14","iface"="wlan34","tenantUUID"="839f87c6-d116-497e-afce-aa8157abd30c","apName"="DIGITROL AP R310-18329","clientIP"="192.168.25.62","userName"="0034da1d7f83","vlanId"="1","radio"="a/n/ac","encryption"="WPA2-AES","osType"="Android","hostname"="android-6d4a9dbc81fecfcf","firstAuth"="1543259331","associationTime"="1543252166","ipAssignTime"="1543259332","disconnectTime"="1543259346","sessionDuration"="15","disconnectReason"="4","rxFrames"="26","rxBytes"="3551","txFrames"="54","txBytes"="5738","peakRx"="3551","peakTx"="5738","rssi"="12","receivedSignalStrength"="-93","Instantaneous rssi"="0","Xput"="0","fwVersion"="3.6.1.0.354","model"="R310","wlanGroupUUID"="3ab644a3-7eee-11e8-b12e-000000939903","zoneUUID"="2babcf8c-ab2a-4283-aedc-3ac00c525734","zoneName"="Digitrol","timeZone"="BRT+3BRST,M10.3.0/00:00,M2.3.0/00:00","apLocation"="","apGps"="","apIpAddress"="192.168.25.8","apIpv6Address"="","apGroupUUID"="1bc2200a-2251-4a04-a7db-0f888e3fa776","domainId"="1f90466b-4b53-4b19-b0ed-47c8778f269c","idealEventVersion"="3.5.0","apDescription"=""'; preg_match_all($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