posix_setuid
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Set the UID of the current process
Description
posix_setuid(int $user_id): bool
Set the real user ID of the current process. This is a privileged function that needs appropriate privileges (usually root) on the system to be able to perform this function.
Parameters
user_idThe user id.
Return Values
Success
Examples
posix_setuid() example
This example will show the current user id and then set it to a different value.
php
<?php
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10001
posix_setuid(10000);
echo posix_getuid()."\n"; //10000
echo posix_geteuid()."\n"; //10000
?>