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

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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;
    }
}

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官方地址：https://www.php.net/manual/en/function.posix-geteuid.php

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posix_geteuid

说明

参数

返回值

范例

参见

User Contributed Notes 1 note