PHP/Utility Function/putenv

Handling DST with zoneinfo

 
<?php
putenv("TZ=America/Denver");
$summer = mktime(12,0,0,7,4,2008);
print date("c", $summer) . "\n";
putenv("TZ=America/Phoenix");
print date("c", $summer) . "\n";
?>

Setting an environment variable

 
<?php
putenv("ORACLE_SID=ORACLE");
?>