What is a typeless variable?

Answer 1

A typeless variable is one which is not bound to a specific data type. This variable can contain a string, then be assigned an integer, then an array, then an object, etc. Note that some programming languages, like the C languages, do not offer typeless variables.

An example of PHP typeless variables in action:

$var = 'hello';

$var = 100;

$var = array( 1, 2, 'hello', 100 );

$var = new Person();

?>