diff --git a/reference/filesystem/functions/popen.xml b/reference/filesystem/functions/popen.xml index c2b7277ed0..eb51722bd8 100644 --- a/reference/filesystem/functions/popen.xml +++ b/reference/filesystem/functions/popen.xml @@ -35,7 +35,14 @@ mode - The mode + The mode. Either 'r' for reading, or 'w' + for writing. + + + On Windows, popen defaults to text mode, i.e. any \n + characters written to or read from the pipe will be translated to \r\n. + If this is not desired, binaray mode can be enforced by setting mode + to 'rb' and 'wb', respectively.