# Function Reference

# IsString

Checks if a variable is a string type.

IsString ( variable )

## Parameters

variable | The variable/expression to check.

## Return Value

Success: | 1.
Failure: | 0 if expression is not string type.

## Remarks

See language datatypes for a detailed description.

## Related

IsArray, IsBinary, IsBool, IsFloat, IsHWnd, IsInt, IsMap, IsNumber, IsPtr, String, VarGetType

## Example

    #include <MsgBoxConstants.au3>

    Local $sString = "This is a string"
    If IsString($sString) Then
        MsgBox($MB_SYSTEMMODAL, "", "The variable is a string")
    Else
        MsgBox($MB_SYSTEMMODAL, "", "The variable is not a string")
    EndIf