note 98540 added to function.putenv

putenv/getenv, $_ENV, and phpinfo(INFO_ENVIRONMENT) are three completely distinct environment stores. doing putenv("x=y") does not affect $_ENV; but also doing $_ENV["x"]="y" likewise does not affect getenv("x"). And neither affect what is returned in phpinfo(). Assuming the USER environment variable is defined as "dave" before running the following: <?php print "env is: ".$_ENV["USER"]."\n"; print "(doing: putenv fred)\n"; putenv("USER=fred"); print "env is: ".$_ENV["USER"]."\n"; print "getenv is: ".getenv("USER")."\n"; print "(doing: set _env barney)\n"; $_ENV["USER"]="barney"; print "getenv is: ".getenv("USER")."\n"; print "env is: ".$_ENV["USER"]."\n"; phpinfo(INFO_ENVIRONMENT); ?> prints: env is: dave (doing: putenv fred) env is: dave getenv is: fred (doing: set _env barney) getenv is: fred env is: barney phpinfo() Environment Variable => Value ... USER => dave ... ---- Server IP: 208.69.120.55 Probable Submitter: 174.46.204.210 ---- Manual Page -- http://www.php.net/manual/en/function.putenv.php Edit -- https://master.php.net/note/edit/98540 Del: integrated -- https://master.php.net/note/delete/98540/integrated Del: useless -- https://master.php.net/note/delete/98540/useless Del: bad code -- https://master.php.net/note/delete/98540/bad+code Del: spam -- https://master.php.net/note/delete/98540/spam Del: non-english -- https://master.php.net/note/delete/98540/non-english Del: in docs -- https://master.php.net/note/delete/98540/in+docs Del: other reasons-- https://master.php.net/note/delete/98540 Reject -- https://master.php.net/note/reject/98540 Search -- https://master.php.net/manage/user-notes.php