> For the complete documentation index, see [llms.txt](https://docs.panther.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.panther.com/ko/pantherflow/functions/regular-expression.md).

# 정규 표현식 함수

{% hint style="info" %}
PantherFlow는 Panther 버전 1.110부터 공개 베타로 제공되며, 모든 고객이 사용할 수 있습니다. 버그 보고와 기능 요청은 Panther 지원팀에 공유해 주세요.
{% endhint %}

## `re.count()`

`re.count(stringable: any, regex: string) -> int`

다음이 나타나는 횟수를 반환합니다 `정규식` 다음에 나타납니다 `문자열로 변환 가능한 값`, 또는 `null` 어떤 값이라도 `null`.

**예:**

```kusto
panther_logs.public.aws_alb
| project tripleDigitBlocks=re.count(clientIp, "[0-9][0-9][0-9]")
```

## `re.matches()`

`re.matches(stringable: any, regex: string) -> bool`

다음과 일치하면 true를 반환합니다 `문자열로 변환 가능한 값` 정규식과 일치합니다 `정규식`.

**예:**

```kusto
panther_logs.public.aws_alb
| project inCidr=re.matches(clientIp, '^192\\.168\\.1\\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[0-9]{1,2})$'), clientIp
```

## `re.replace()`

`re.replace(stringable: any, regex: string, replacement: string) -> string`

반환합니다 `문자열로 변환 가능한 값` 지정된 패턴이 있는 `정규식` (또는 패턴의 모든 발생)을 제거하거나 다음으로 대체됩니다 `치환 문자열`, 또는 `null` 어떤 값이라도 `null`.

**예:**

```kusto
panther_logs.public.aws_alb
| project traceId=re.replace(connTraceId, "^(TID_)", "")
```

## `re.substr()`

`re.substr(stringable: any, regex: string) -> string`

다음과 일치하는 첫 번째 하위 문자열을 반환합니다 `정규식` 내 `문자열로 변환 가능한 값`, 또는 `null` 어떤 값이라도 `null`.

**예:**

```kusto
panther_logs.public.aws_alb
| project tripleDigitBlocks=re.substr(clientIp, "[0-9][0-9][0-9]")
```


---

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