check if a variable is of type mysqli object?

Question

how do i check if a variable is of a type mysqli object?

Answer 1

You'll probably want the instanceof operator.

It will work for derived classes as well, in the odd case that you extending or building your own wrappers.

Answer 2

Take a look at get_class

Answer 3

Try the instanceof operator, the is_a function or the get_class function:

$var instanceof MySQLi
is_a($var, 'mysqli')
is_object($var) && get_class($var) == 'mysqli'

Answer 4

Тhe decision of Gumbo works, but in this case must check if $var is instance of mysqli_result, i.e.

$var instanceof mysqli_result;
is_a($var, 'mysqli_result');
get_class($var) == 'mysqli_result';

Answer 5

http://www.php.net/get_class