(PHP 4, PHP 5)
posix_setuid — Set the UID of the current process
$uid
)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.
uid
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.
<?php
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10001
posix_setuid(10000);
echo posix_getuid()."\n"; //10000
echo posix_geteuid()."\n"; //10000
?>