(PHP 4, PHP 5, PHP 7, PHP 8)
posix_setuid — Set the UID of the current process
$user_id
): boolSet 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.
user_id
The user id.
Returns true
on success or false
on failure.
Example #1 posix_setuid() example
This example will show the current user id and then set it to a different value.
<?phpecho posix_getuid()."\n"; //10001echo posix_geteuid()."\n"; //10001posix_setuid(10000);echo posix_getuid()."\n"; //10000echo posix_geteuid()."\n"; //10000?>