======keys======

<box>
Get all the item keys of an [[PTPScript:Types:Array|Array]].

\\
**Syntax**
  * ''[[PTPScript:Types:Array|Array]] keys( [[PTPScript:Types:Array|Array]] subject )''

\\
**Parameters**
  * [[PTPScript:Types:Array|Array]] ''subject'' - The Array to get the item keys from.

\\
**Result**
  * [[PTPScript:Types:Array|Array]] - An Array containing all the item keys of ''subject'' as item values.
</box>

Returns the item keys of ''subject''.