(PHP 4, PHP 5, PHP 7)
putenv — 锟斤拷锟矫伙拷锟斤拷锟斤拷锟斤拷锟斤拷值
$setting
) : bool
锟斤拷锟� setting 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷诘锟角帮拷锟斤拷锟斤拷诩洹�
锟斤拷锟斤拷锟斤拷锟斤拷锟绞憋拷锟斤拷锟斤拷锟街革拷锟斤拷锟斤拷始状态锟斤拷
锟斤拷锟斤拷锟截讹拷锟侥伙拷锟斤拷锟斤拷锟斤拷也锟叫匡拷锟斤拷锟斤拷一锟斤拷潜锟节的帮拷全漏锟斤拷锟斤拷 safe_mode_allowed_env_vars 锟斤拷锟斤拷锟斤拷一锟斤拷锟皆讹拷锟脚分革拷锟斤拷前缀锟叫憋拷 锟节帮拷全模式锟铰ｏ拷锟矫伙拷锟斤拷锟皆斤拷锟斤拷锟睫革拷锟矫革拷指锟斤拷锟借定锟斤拷前缀锟斤拷锟狡碉拷指锟筋。 默锟斤拷锟斤拷锟斤拷拢锟斤拷没锟斤拷锟斤拷芄锟斤拷薷锟斤拷锟� PHP_ 锟斤拷头锟侥伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 PHP_FOO=BAR锟斤拷锟斤拷 注锟解：锟斤拷锟斤拷锟街革拷锟斤拷强盏模锟絇HP锟斤拷锟斤拷锟矫伙拷锟借定锟斤拷锟解环锟斤拷锟斤拷锟斤拷锟斤拷
safe_mode_protected_env_vars 指锟斤拷锟斤拷锟斤拷硕锟斤拷欧指锟斤拷幕锟斤拷锟斤拷锟斤拷锟斤拷斜锟绞癸拷没锟斤拷锟斤拷锟斤拷薹锟酵拷锟� putenv() 锟睫改★拷 锟斤拷使 safe_mode_allowed_env_vars 锟斤拷锟斤拷锟斤拷锟斤拷锟睫改ｏ拷锟斤拷些锟斤拷锟斤拷也锟结被锟斤拷锟斤拷锟斤拷
setting锟斤拷锟矫ｏ拷锟斤拷锟斤拷 "FOO=BAR"
锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷
Example #1 锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
<?php
putenv("UNIQID=$uniqid");
?>
The safe_mode_allowed_env_vars 锟斤拷 safe_mode_protected_env_vars 指锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�锟斤拷全模式时锟斤拷效锟斤拷