> 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/pantherflow/functions/string.md).

# String Functions

{% hint style="info" %}
PantherFlow is in open beta starting with Panther version 1.110, and is available to all customers. Please share any bug reports and feature requests with your Panther support team.
{% endhint %}

## `strings.cat()`

`strings.cat(str: string, str: string, ... ) -> string`

Concatenates strings.

**Example:**

```kusto
panther_logs.public.aws_alb
| project clientAddr=strings.cat(clientIp, ':', clientPort)
```

## `strings.contains()`

`strings.contains(str: any, substr: string) -> bool`

Returns true if `str` contains `substr`. If `str` is not a string, it is stringified first.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingMozilla=strings.contains(userAgent, "Mozilla")
```

## `strings.ends_with()`

`strings.ends_with(str: string, postfix: string) -> bool`

Returns true if `str` ends with `postfix`.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingSHA256=strings.ends_with(sslCipher, "SHA256")
```

## `strings.ilike()`

`strings.ilike(str: any, substr: string) -> bool`

Returns true if `str` contains `substr` with SQL LIKE semantics ignoring case.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingSHA=strings.ilike(sslCipher, "%sha%")
```

## `strings.join()`

`strings.join(elements: [string], sep: string) -> string`

Returns `elements` joined together with `sep` between each element.

**Example:**

```kusto
panther_logs.public.aws_alb
| project same=strings.join(strings.split(domainName, "."), ".")
```

## `strings.len()`

`strings.len(str: any) -> int`

Returns the length of `str`. If `str` is not a string, it is stringified first.

**Example:**

```kusto
panther_logs.public.aws_alb
| project keyLen=strings.len(p_source_file.aws_s3_key)
```

## `strings.like()`

`strings.like(str: any, substr: string) -> bool`

Returns true if `str` contains `substr` with SQL LIKE semantics.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingSHA=strings.like(sslCipher, "%SHA%")
```

## `strings.lower()`

`strings.lower(str: string) -> string`

Returns `str` converted to lower case.

**Example:**

```kusto
panther_logs.public.aws_alb
| project action=strings.cat(strings.lower(requestHttpMethod), " a letter")
```

## `strings.split()`

`strings.split(str: any, sep: string) -> [string]`

Returns a list of substrings of `str` separated by `sep`.

**Example:**

```kusto
panther_logs.public.aws_alb
| project ip_parts=strings.split(clientIp, ".")
```

## `strings.starts_with()`

`strings.starts_with(str: string, prefix: string) -> bool`

Returns true if `str` starts with `prefix`.

**Example:**

```kusto
panther_logs.public.aws_alb
| project targetingLoadBalancer=strings.starts_with(targetGroupArn, "arn:aws:elasticloadbalancing")
```

## `strings.upper()`

`strings.upper(str: string) -> string`

Returns `str` converted to upper case.

**Example:**

```kusto
panther_logs.public.aws_alb
| project bigDomain=strings.upper(domainName)
```


---

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