diff --git a/reference/datetime/functions/date-default-timezone-get.xml b/reference/datetime/functions/date-default-timezone-get.xml index 475ebff27e..2ff0ca7c0f 100644 --- a/reference/datetime/functions/date-default-timezone-get.xml +++ b/reference/datetime/functions/date-default-timezone-get.xml @@ -35,7 +35,11 @@ - Querying the host operating system (if supported and allowed by the OS) + Querying the host operating system (if supported and allowed by the OS). This uses an algorithm + that has to guess the timezone. This is by no means going to work correctly for + every situation. A warning is shown when this stage is reached. Do not rely on it to be guessed + correctly, and set date.timezone to the correct timezone + instead.