# GetFunctionData()

Returns information about a built in function (BIF)

```
GetFunctionData( functionName=string );
```

**Returns:** struct

# Arguments

| Argument | Type | Required | Description | Default |
|----------|------|----------|-------------|---------|
| functionName | string | Yes | Name of the built in function to return information about |  |

# Examples

```cfml
getFn = getfunctiondata('array');
  writeDump(getFn);
```







# Categories

[Lucee Server related Tags, Functions and Guides](../../categories/server.md)

# See Also

[GetBuiltInFunction()](getbuiltinfunction.md), [GetFunctionList()](getfunctionlist.md), [GetTagData()](gettagdata.md), [GetTagList()](gettaglist.md)