为什么我的$ _ENV为空？

原来这里有两个问题：

1.

$_ENV

; This directive determines which super global arrays are registered when PHP; starts up. If the register_globals directive is enabled, it also determines; what order variables are populated into the global space. G,P,C,E & S are; abbreviations for the following respective super globals: GET, POST, cookie,; ENV and SERVER. There is a performance penalty paid for the registration of; these arrays and because ENV is not as commonly used as the others, ENV is; is not recommended on productions servers. You can still get access to; the environment variables through getenv() should you need to.; Default Value: "EGPCS"; Development Value: "GPCS"; Production Value: "GPCS";; http://php.net/variables-ordervariables_order = "GPCS"

当我将

variables_order

EGPCS

$_ENV

2.当您

SetEnv

.htaccess

$_SERVER

$_ENV

SetEnv

# .htaccessSetEnv ENV devSetEnv base /ssl/# phpvar_dump($_SERVER['ENV'], $_SERVER['base']);// string 'dev' (length=3)// string '/ssl/' (length=5)

3.该

getenv

var_dump(getenv('os'), getenv('env'));// string 'Windows_NT' (length=10)// string 'dev' (length=3)