Simply put, :: is for class-level properties, and -> is for object-level properties.
- If the property belongs to the class, use ::
- If the property belongs to an instance of the class, use ->
*/
class Tester
{
public $foo;
const BLAH = "lala";
public static function bar()
{
echo "Tester\n";
}
}
$t = new Tester();
$t->foo;
Tester::bar();
printf("%s\n", Tester::BLAH);
/* When you declare a class, it is by default 'static'. You can access any method in that class using the :: operator, and in any scope. This means if I create a lib class, I can access it wherever I want and it doesn't need to be globaled:
*/
class lib
{
static function foo()
{
echo "Hello\n";
}
}
lib::foo();
/* Now, when you create an instance of this class by using the new keyword, you use -> to access methods and values, because you are referring to that specific instance of the class. You can think of -> as inside of. (Note, you must remove the static keyword) IE:
*/
class lib2
{
