Description:
------------
if's branches in both examples for mysqli_set_charset are swapped.

Reproduce code:
---------------
Manual caliming:
Returns TRUE on success or FALSE on failure.
But example reads:
if ($mysqli->set_charset("utf8")) {
   printf("Error loading character set utf8: %s\n", $mysql->error);
} else {
   printf("Current character set: %s\n", $mysqli->character_set_name());
}
Inconsistence. Or mysqli_set_charset() returns false on success, or missing ! in if, or branches swapped by mistake.

Expected result:
----------------
if ($mysqli->set_charset("utf8")) {
   printf("Current character set: %s\n", $mysqli->character_set_name());
} else {
   printf("Error loading character set utf8: %s\n", $mysql->error);
}