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(): intReturn 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)
User Contributed Notes 1 note
up down 0 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;
}
}
add a note
官方地址：https://www.php.net/manual/en/function.posix-geteuid.php