Function Reference

FileOpen

Opens a text file for reading or writing.

FileOpen ( "filename", mode )

Parameters

filename	Filename of the text file to open.
mode	Mode (read or write) to open the file in. 0 = Read mode 1 = Write mode (append to end of file) 2 = Write mode (erase previous contents) Both write modes will create the file if it does not already exist.

Return Value

Success:	Returns a file "handle" or use with subsequent file functions.
Failure:	Returns -1 if error occurs.

Remarks

Up to 64 files can be open simultaneously by one AutoIt script. Exceeding this limit throws a run-time error and
A file can only be in either read or write mode; it cannot be in both.
When opening a file in write mode, the file will be created if it does not exist.
When finished working with a file, call the FileClose function to close the file. Autoit normally closes all files upon termination, but explicitly calling FileClose is still a good idea.

Example

$file = FileOpen("test.txt", 0)

; Check if file opened for reading OK
If $file = -1 Then
MsgBox(0, "Error", "Unable to open file.")
Exit
EndIf

FileClose($file)