1 $db = new mysqli('localhost', 'root', '', 'w');
2 if($db->connect_error){
3 die('Connect Error ( '.$db->connect_errno.' )'.$db->connect_error);
4 }
5 echo 'Connect OK.<br>';
6 $wtab = 'w'.rand(123,987);
7 $w = $db->query("CREATE TABLE $wtab (w int)");
8 var_dump($w);
9 $w = $db->query("INSERT INTO $wtab VALUES(123)");
10 var_dump($w);
11 $w = $db->query("SELECT * FROM $wtab");
12 var_dump($w);
Connect OK.
D:\wamp64\www\wdb.php:21:boolean false
D:\wamp64\www\wdb.php:23:boolean true
D:\wamp64\www\wdb.php:25:
object(mysqli_result)[3]
public 'current_field' => int 0
public 'field_count' => int 1
public 'lengths' => null
public 'num_rows' => int 2
public 'type' => int 0
