Argument 1 passed to sqr() must be numeric, string 'hello world' given
Argument 1 passed to first() must be an array or implement array access or be a string and not be empty, integer 12 given
Argument 1 passed to concat() must be a string, integer 1 given
Argument 1 passed to splitBy() must be an integer, string 'hello world' given
Argument 1 passed to sum() must be an integer or be Integer, string 'hello' given
Argument 1 passed to getUserFullName() must be an array with key(s) 'first_name', 'last_name', array {"hello":"world"} given
Argument 1 passed to pet() must be an object with public method(s) 'quack', Integer given
Argument 1 passed to calculateAge() must be valid year, integer 1800 given