Advantages of PHP-GTK include the following? (choose all that apply)

Which function can be used to count the number of rows returned?

Which function can be used to determine if a file exists?

Type of PHP error severity?

How you can send Multiple email recipients all go into the address field, with commas separating?

When connecting to a MySQL database server, what are the main API options?

Which is used to count total number of characters in a string?

If you would like to check to see if a PHP variable has data, which language constructs would you use?

Which best describes: $panther = new Animal();

Which is an example of a statement using a combined operator?