note 123833 added to function.getenv

It is worth noting that since getenv('MY_VARIABLE') will return false when the variable given is not set, there is no direct way to distinguish between a variable that is unset and one that is explicitly set to the value bool(false) when using getenv(). This makes it somewhat tricky to have boolean environment variables default to true if unset, which you can work around either by using "falsy" values such as 0 with the strict comparison operators or by using the superglobal arrays and isset(). ---- Server IP: 208.43.231.9 Probable Submitter: 185.85.3.142 (proxied: 193.219.102.243) ---- Manual Page -- http://php.net/manual/en/function.getenv.php Edit -- https://master.php.net/note/edit/123833 Del: integrated -- https://master.php.net/note/delete/123833/integrated Del: useless -- https://master.php.net/note/delete/123833/useless Del: bad code -- https://master.php.net/note/delete/123833/bad+code Del: spam -- https://master.php.net/note/delete/123833/spam Del: non-english -- https://master.php.net/note/delete/123833/non-english Del: in docs -- https://master.php.net/note/delete/123833/in+docs Del: other reasons-- https://master.php.net/note/delete/123833 Reject -- https://master.php.net/note/reject/123833 Search -- https://master.php.net/manage/user-notes.php