Regular Expressions 101

Save & Share

  • Regex Version: ver. 1
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

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 = '/^@\d.*distribute_event: message EventRinging(?:\R(?!\d).*)*\R.*RTargetObjectSelected\'\h+\'\?VAG_EMERGENCIA2.*/m'; $str = '@20:20:51.8200 [0] 8.1.104.23 distribute_event: message EventRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA2:\' 20:20:53.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:20:54.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:20:54.821 Int 04544 Interaction message "EventRinging" generated @20:21:51.8200 [0] 8.1.104.23 distribute_event: message EventRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA1:\' 20:20:54.821 Int 04544 Interaction message "EventRinging" generated @20:21:51.8200 [0] 8.1.104.23 distribute_event: message EventRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_AGENCIA1:\' 20:20:54.821 Int 04544 Interaction message "EventRinging" generated 20:23:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:24:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 @20:25:51.8200 [0] 8.1.104.23 distribute_event: message EventRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA1:\' 20:20:54.821 Int 04544 Interaction message "EventRinging" generated 20:28:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 @20:29:51.8200 [0] 8.1.104.23 distribute_event: message EventNotRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA2:\' 20:20:54.821 Int 04544 Interaction message "EventNotRinging" generated 20:30:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:31:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:32:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 @20:33:51.8200 [0] 8.1.104.23 distribute_event: message EventRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA2:\' 20:20:54.821 Int 04544 Interaction message "EventRinging" generated 20:34:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:35:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:36:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 @20:37:51.8200 [0] 8.1.104.23 distribute_event: message EventNotRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA1:\' 20:20:54.821 Int 04544 Interaction message "EventRinging" generated 20:38:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 20:39:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 @20:40:51.8200 [0] 8.1.104.23 distribute_event: message EventRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA2:\' 20:20:54.821 Int 04544 Interaction message "EventNotRinging" generated 20:41:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0 @20:42:51.8200 [0] 8.1.104.23 distribute_event: message EventNotRinging AttributeUserData [634] 00 18 00 00.. \'RTargetObjectSelected\' \'?VAG_EMERGENCIA1:\' 20:20:54.821 Int 04544 Interaction message "EventNotRinging" generated 20:42:51.821: $+SIP:CTI:HA_SEND_SYNC_MESSAGE:39982499:0'; preg_match_all($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