To create a new object, use the new statement to instantiate a class:
echo "Doing foo.";
$bar = new foo;
For a full discussion, see the Classes and Objects chapter.
Converting to object
If an object is converted to an object, it is not
modified. If a value of any other type is converted to an
object, a new instance of the stdClass
built-in class is created. If the value was
NULL, the new instance will be
empty. Arrays convert to an object with properties
named by keys, and corresponding values. For any other value, a member
variable named scalar will contain the value.
$obj = (object) 'ciao';
echo $obj->scalar; // outputs 'ciao'