Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, PDO given in /home/zadooorg/public_html/blog.php:15 Stack trace: #0 /home/zadooorg/public_html/blog.php(15): mysqli_query() #1 {main} thrown in /home/zadooorg/public_html/blog.php on line 15