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

/
/
mg

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)^\s(?P<ValueType>\w+)\s(?P<DataType>\w+)?\s?Instance[\.\:](?P<Inheritance>\w+) ?(?P<TagsOrArguments>.+)?" Local $sString = "Class Instance [notbrowsable]" & @CRLF & _ " Property bool Instance.Archivable" & @CRLF & _ " Property string Instance.ClassName [readonly]" & @CRLF & _ " Property int Instance.DataCost [readonly] [RobloxPlaceSecurity]" & @CRLF & _ " Property string Instance.Name" & @CRLF & _ " Property Object Instance.Parent" & @CRLF & _ " Property bool Instance.RobloxLocked [PluginSecurity]" & @CRLF & _ " Property bool Instance.archivable [hidden]" & @CRLF & _ " Property string Instance.className [deprecated] [readonly]" & @CRLF & _ " Function void Instance:ClearAllChildren()" & @CRLF & _ " Function Instance Instance:Clone()" & @CRLF & _ " Function void Instance:Destroy()" & @CRLF & _ " Function Instance Instance:FindFirstChild(string name, bool recursive = false)" & @CRLF & _ " Function Objects Instance:GetChildren()" & @CRLF & _ " Function string Instance:GetDebugId(int scopeLength = 4) [notbrowsable] [PluginSecurity]" & @CRLF & _ " Function string Instance:GetFullName()" & @CRLF & _ " Function bool Instance:IsA(string className)" & @CRLF & _ " Function bool Instance:IsAncestorOf(Instance descendant)" & @CRLF & _ " Function bool Instance:IsDescendantOf(Instance ancestor)" & @CRLF & _ " Function void Instance:Remove() [deprecated]" & @CRLF & _ " Function Objects Instance:children() [deprecated]" & @CRLF & _ " Function Instance Instance:clone() [deprecated]" & @CRLF & _ " Function void Instance:destroy() [deprecated]" & @CRLF & _ " Function Instance Instance:findFirstChild(string name, bool recursive = false) [deprecated]" & @CRLF & _ " Function Objects Instance:getChildren() [deprecated]" & @CRLF & _ " Function bool Instance:isA(string className) [deprecated]" & @CRLF & _ " Function bool Instance:isDescendantOf(Instance ancestor) [deprecated]" & @CRLF & _ " Function void Instance:remove() [deprecated]" & @CRLF & _ " YieldFunction Instance Instance:WaitForChild(string childName)" & @CRLF & _ " Event Instance.AncestryChanged(Instance child, Instance parent)" & @CRLF & _ " Event Instance.Changed(Property property)" & @CRLF & _ " Event Instance.ChildAdded(Instance child)" & @CRLF & _ " Event Instance.ChildRemoved(Instance child)" & @CRLF & _ " Event Instance.DescendantAdded(Instance descendant)" & @CRLF & _ " Event Instance.DescendantRemoving(Instance descendant)" & @CRLF & _ " Event Instance.childAdded(Instance child) [deprecated]" & @CRLF & _ "Class Accoutrement : Instance" & @CRLF & _ " Property Vector3 Accoutrement.AttachmentForward" & @CRLF & _ " Property CoordinateFrame Accoutrement.AttachmentPoint" & @CRLF & _ " Property Vector3 Accoutrement.AttachmentPos" & @CRLF & _ " Property Vector3 Accoutrement.AttachmentRight" & @CRLF & _ " Property Vector3 Accoutrement.AttachmentUp" & @CRLF & _ "Class Hat : Accoutrement" & @CRLF & _ "Class AdService : Instance [notCreatable]" & @CRLF & _ " Function void AdService:ShowVideoAd()" & @CRLF & _ " Event AdService.VideoAdClosed()" & @CRLF & _ "Class AdvancedDragger : Instance" & @CRLF & _ "Class Animation : Instance" & @CRLF & _ " Property Content Animation.AnimationId" & @CRLF & _ "Class AnimationController : Instance" & @CRLF & _ " Function Array AnimationController:GetPlayingAnimationTracks()" & @CRLF & _ " Function Instance AnimationController:LoadAnimation(Instance animation)" & @CRLF & _ " Event AnimationController.AnimationPlayed(Instance animationTrack)" & @CRLF & _ "Class AnimationTrack : Instance" & @CRLF & _ " Property Object AnimationTrack.Animation [readonly]" & @CRLF & _ " Property bool AnimationTrack.IsPlaying [readonly]" & @CRLF & _ " Property float AnimationTrack.Length [readonly]" & @CRLF & _ " Property AnimationPriority AnimationTrack.Priority" & @CRLF & _ " Property float AnimationTrack.TimePosition" & @CRLF & _ " Function void AnimationTrack:AdjustSpeed(float speed = 1)" & @CRLF & _ " Function void AnimationTrack:AdjustWeight(float weight = 1, float fadeTime = 0.100000001)" & @CRLF & _ " Function double AnimationTrack:GetTimeOfKeyframe(string keyframeName)" & @CRLF & _ " Function void AnimationTrack:Play(float fadeTime = 0.100000001, float weight = 1, float speed = 1)" & @CRLF & _ " Function void AnimationTrack:Stop(float fadeTime = 0.100000001)" & @CRLF & _ " Event AnimationTrack.KeyframeReached(string keyframeName)" & @CRLF & _ " Event AnimationTrack.Stopped() [deprecated]" & @CRLF & _ "Class AnimationTrackState : Instance" & @CRLF & _ "Class Animator : Instance" & @CRLF & _ " Function Instance Animator:LoadAnimation(Instance animation)" & @CRLF & _ "Class AssetService : Instance" & @CRLF & _ " Function void AssetService:SetAssetRevertUrl(string revertUrl) [LocalUserSecurity]" & @CRLF & _ " Function void AssetService:SetAssetVersionsUrl(string versionsUrl) [LocalUserSecurity]" & @CRLF & _ " Function void AssetService:SetPlaceAccessUrl(string accessUrl) [LocalUserSecurity]" & @CRLF & _ " YieldFunction int AssetService:CreatePlaceAsync(string placeName, int templatePlaceID, string description = )" & @CRLF & _ " YieldFunction int AssetService:CreatePlaceInPlayerInventoryAsync(Instance player, string placeName, int templatePlaceID, string description = )" & @CRLF & _ " YieldFunction Dictionary AssetService:GetAssetVersions(int placeId, int pageNum = 1)" & @CRLF & _ " YieldFunction int AssetService:GetCreatorAssetID(int creationID)" & @CRLF & _ " YieldFunction Instance AssetService:GetGamePlacesAsync()" & @CRLF & _ " YieldFunction Dictionary AssetService:GetPlacePermissions(int placeId)" & @CRLF & _ " YieldFunction bool AssetService:RevertAsset(int placeId, int versionNumber)" & @CRLF & _ " YieldFunction void AssetService:SavePlaceAsync()" & @CRLF & _ " YieldFunction bool AssetService:SetPlacePermissions(int placeId, AccessType accessType = Everyone, Array inviteList = {})" & @CRLF & _ "Class BadgeService : Instance [notCreatable]" & @CRLF & _ " Function void BadgeService:SetAwardBadgeUrl(string url) [LocalUserSecurity]" & @CRLF & _ " Function void BadgeService:SetHasBadgeCooldown(int seconds) [LocalUserSecurity]" & @CRLF & _ " Function void BadgeService:SetHasBadgeUrl(string url) [LocalUserSecurity]" & @CRLF & _ " Function void BadgeService:SetIsBadgeDisabledUrl(string url) [LocalUserSecurity]" & @CRLF & _ " Function void BadgeService:SetIsBadgeLegalUrl(string url) [LocalUserSecurity]" & @CRLF & _ " Function void BadgeService:SetPlaceId(int placeId) [LocalUserSecurity]" & @CRLF & _ " YieldFunction bool BadgeService:AwardBadge(int userId, int badgeId)" & @CRLF & _ " YieldFunction bool BadgeService:IsDisabled(int badgeId)" & @CRLF & _ " YieldFunction bool BadgeService:IsLegal(int badgeId)" & @CRLF & _ " YieldFunction bool BadgeService:UserHasBadge(int userId, int badgeId)" & @CRLF & _ " Event BadgeService.BadgeAwarded(string message, int userId, int badgeId) [RobloxScriptSecurity]" & @CRLF & _ "Class BasePlayerGui : Instance" & @CRLF & _ "Class CoreGui : BasePlayerGui [notbrowsable] [notCreatable]" & @CRLF & _ " Property Object CoreGui.SelectionImageObject [RobloxScriptSecurity]" & @CRLF & _ " Property int CoreGui.Version [readonly]" & @CRLF & _ "Class PlayerGui : BasePlayerGui [notCreatable]" & @CRLF & _ " Property Object PlayerGui.SelectionImageObject" & @CRLF & _ " Function float PlayerGui:GetTopbarTransparency()" & @CRLF & _ " Function void PlayerGui:SetTopbarTransparency(float transparency)" & @CRLF & _ " Event PlayerGui.TopbarTransparencyChangedSignal(float transparency)" & @CRLF & _ "Class StarterGui : BasePlayerGui" & @CRLF & _ " Property bool StarterGui.ResetPlayerGuiOnSpawn" & @CRLF & _ " Property bool StarterGui.ShowDevelopmentGui" & @CRLF & _ " Function bool StarterGui:GetCoreGuiEnabled(CoreGuiType coreGuiType)" & @CRLF & _ " Function void StarterGui:RegisterGetCore(string parameterName, Function getFunction) [RobloxScriptSecurity]" & @CRLF & _ " Function void StarterGui:RegisterSetCore(string parameterName, Function setFunction) [RobloxScriptSecurity]" & @CRLF & _ " Function void StarterGui:SetCore(string parameterName, Variant value)" & @CRLF & _ " Function void StarterGui:SetCoreGuiEnabled(CoreGuiType coreGuiType, bool enabled)" & @CRLF & _ " YieldFunction Variant StarterGui:GetCore(string parameterName)" & @CRLF & _ " Event StarterGui.CoreGuiChangedSignal(CoreGuiType coreGuiType, bool enabled) [RobloxScriptSecurity]" & @CRLF & _ "Class BinaryStringValue : Instance" & @CRLF & _ "Class BindableEvent : Instance" & @CRLF & _ " Function void BindableEvent:Fire(Tuple arguments)" & @CRLF & _ " Event BindableEvent.Event(Tuple arguments)" & @CRLF & _ "Class BindableFunction : Instance" & @CRLF & _ " YieldFunction Tuple BindableFunction:Invoke(Tuple arguments)" & @CRLF & _ " Callback Tuple BindableFunction.OnInvoke(Tuple arguments)" & @CRLF & _ "Class BodyMover : Instance" & @CRLF & _ "Class BodyAngularVelocity : BodyMover" & @CRLF & _ " Property Vector3 BodyAngularVelocity.AngularVelocity" & @CRLF & _ " Property Vector3 BodyAngularVelocity.MaxTorque" & @CRLF & _ " Property float BodyAngularVelocity.P" & @CRLF & _ " Property Vector3 BodyAngularVelocity.angularvelocity" & @CRLF & _ " Property Vector3 BodyAngularVelocity.maxTorque" & @CRLF & _ "Class BodyForce : BodyMover" & @CRLF & _ " Property Vector3 BodyForce.Force" & @CRLF & _ " Property Vector3 BodyForce.force" & @CRLF & _ "Class BodyGyro : BodyMover" & @CRLF & _ " Property CoordinateFrame BodyGyro.CFrame" & @CRLF & _ " Property float BodyGyro.D" & @CRLF & _ " Property Vector3 BodyGyro.MaxTorque" & @CRLF & _ " Property float BodyGyro.P" & @CRLF & _ " Property CoordinateFrame BodyGyro.cframe [deprecated]" & @CRLF & _ " Property Vector3 BodyGyro.maxTorque [deprecated]" & @CRLF & _ "Class BodyPosition : BodyMover" & @CRLF & _ " Property float BodyPosition.D" & @CRLF & _ " Property Vector3 BodyPosition.MaxForce" & @CRLF & _ " Property float BodyPosition.P" & @CRLF & _ " Property Vector3 BodyPosition.Position" & @CRLF & _ " Property Vector3 BodyPosition.maxForce [deprecated]" & @CRLF & _ " Property Vector3 BodyPosition.position [deprecated]" & @CRLF & _ " Function Vector3 BodyPosition:GetLastForce()" & @CRLF & _ " Function Vector3 BodyPosition:lastForce() [deprecated]" & @CRLF & _ " Event BodyPosition.ReachedTarget()" & @CRLF & _ "Class BodyThrust : BodyMover" & @CRLF & _ " Property Vector3 BodyThrust.Force" & @CRLF & _ " Property Vector3 BodyThrust.Location" & @CRLF & _ " Property Vector3 BodyThrust.force [deprecated]" & @CRLF & _ " Property Vector3 BodyThrust.location [deprecated]" & @CRLF & _ "Class BodyVelocity : BodyMover" & @CRLF & _ " Property Vector3 BodyVelocity.MaxForce" & @CRLF & _ " Property float BodyVelocity.P" & @CRLF & _ " Property Vector3 BodyVelocity.Velocity" & @CRLF & _ " Property Vector3 BodyVelocity.maxForce [deprecated]" & @CRLF & _ " Property Vector3 BodyVelocity.velocity [deprecated]" & @CRLF & _ " Function Vector3 BodyVelocity:GetLastForce()" & @CRLF & _ " Function Vector3 BodyVelocity:lastForce()" & @CRLF & _ "Class RocketPropulsion : BodyMover" & @CRLF & _ " Property float RocketPropulsion.CartoonFactor" & @CRLF & _ " Property float RocketPropulsion.MaxSpeed" & @CRLF & _ " Property float RocketPropulsion.MaxThrust" & @CRLF & _ " Property Vector3 RocketPropulsion.MaxTorque" & @CRLF & _ " Property Object RocketPropulsion.Target" & @CRLF & _ " Property Vector3 RocketPropulsion.TargetOffset" & @CRLF & _ " Property float RocketPropulsion.TargetRadius" & @CRLF & _ " Property float RocketPropulsion.ThrustD" & @CRLF & _ " Property float RocketPropulsion.ThrustP" & @CRLF & _ " Property float RocketPropulsion.TurnD" & @CRLF & _ " Property float RocketPropulsion.TurnP" & @CRLF & _ " Function void RocketPropulsion:Abort()" & @CRLF & _ " Function void RocketPropulsion:Fire()" & @CRLF & _ " Function void RocketPropulsion:fire() [deprecated]" & @CRLF & _ " Event RocketPropulsion.ReachedTarget()" & @CRLF & _ "Class Test : Testing [readonly] [RobloxPlaceSecurity]" & @CRLF & _ " Property bool Testing.ReadOnlyAndSecure [readonly] [RobloxPlaceSecurity]" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "Result")

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 AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm