posix_geteuid
(PHP 4, PHP 5, PHP 7, PHP 8)
posix_geteuid — Return the effective user ID of the current process
说明
posix_geteuid(): int
Return the numeric effective user ID of the current process. See also posix_getpwuid() for information on how to convert this into a useable username.
参数
此函数没有参数。
返回值
Returns the user id, as an int
范例
示例 #1 posix_geteuid() example
This example will show the current user id then set the effective user id to a separate id using posix_seteuid(), then show the difference between the real id and the effective id.
<?php
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10001
posix_seteuid(10000);
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10000
?>
参见
- posix_getpwuid() - Return info about a user by user id
- posix_getuid() - Return the real user ID of the current process
- posix_setuid() - Set the UID of the current process
- POSIX man page GETEUID(2)
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User Contributed Notes 1 note
divinity76+spam at gmail dot com ¶
5 months ago
if you for some reason need the euid without depending on php-posix being available, try
<?php
function geteuid_without_posix_dependency(): int
{
try {
// this is faster if available
return \posix_geteuid();
} catch (\Throwable $ex) {
// php-posix not available.. fallback to hack
$t = tmpfile();
$ret = fstat($t)["uid"];
fclose($t);
return $ret;
}
}
备份地址：http://www.lvesu.com/blog/php/function.posix-geteuid.php